what needs to be done is adding DH key exchange algorithm for my existing project on a webrtc server straming video and audio. My original project code was recording audio from browser and mobile and comparing them to be a second-factor authentication. And what I want to improve is using webrtc and streaming audio from both to compare them, instead of recording. What I have done so far is making a webrtc signalling server and a url link that streams video and audio. How the connection works now is We create a room with a roomID and the peers make a request to the server with the roomID in the url. RoomID will be put in the same room and they start streaming video and audio. But it's too insecure and I need to generate a diffie hellman key pair on each peer (both desktop and mob...
...and defi; Eliminate the access threshold of planting industry and improve the user experience; Provide better utilization of funds; Create powerful optimizations to provide the best interests for users of defi; Promote encryption adoption. Signature features: Compared with other platforms, a single asset with the same or higher apyiapr (no LP token required). Zero agricultural transaction costs. Multi Chain agriculture (BSC, eh, polygon, etc.)....
我需要一个安卓app。我已经有设计稿了，只需要对其进行搭建。
您好正在使用Jarvee, 需要jarvee的设置方式建议 对于instagram和facebook的限制感觉麻烦, 需有专家合作配置完整的机器人功能。 1.需要帮助设置服务器vps部屬 2.需要帮助proxy家用代理的建议, instagram和facebook专用家用代理 3. 2captcha-api 验证码串接,Instagram-自动电子邮件验证教學, Instagram-两因素验证 4.cookie的设置, 以免被facebook及instagram阻挡 初學者模式---facebook初學者模式 長期合作相關設定 期待您的回覆謝謝
Development language is not required, the budget is 10,000 RMB, the price can be discussed Main function: The software uses the QQipad protocol to automatically exit the QQ discussion group (also called multi-person chat) Need to be green software without installation and direct operation, to minimize the background operation QQ exists in the discussion group will automatically retreat, must be seconds back Details: If the QQ of the login protocol is bound to the security device, you need to pop up the phone verification or QQ security center verification to ensure that you can log in and use normally. After the login is successful, the current status is displayed next to it, and then you can start and stop the button. After starting the run, the list of historical messages below...
We have completed the graphic design and graphic materials, to speed up the project that want additional resource to help us to code for HTML 5 pages. - Adaptive HTML for mobile devices - Multi- environment support(Iphone 6 - 8, Iphone X and android phones) - Expected 2.5 weeks to complete entire page development, 0.5 weeks for testing and fixing - Basic test from developer before releasing every build to us. Final acceptance test will done by us - NDA is needed before start sharing project infomation 目前我们正在开发一个餐厅订单后台处理的平台，需要另外一名freelance来加速HTML5的开发进程。 - 目前我们已经完成了页面额设计和PS素材的制作，开发人员可以直接使用。 - 自适应网页制作，尤其是针对不同的移动设备（Iphone 6 - 8, Iphone X and android phones） - 希望在两周半的时候完成页面的开发（希望每两两天提交代码，以便早点检查和反馈），大概3-5天做验收测试和问题修复 - 希望开发人员会做基本的自测，确保发给我们验收的内容有一定的质量。当然我们也很希望开发者可用提出一些专业的建议和意见 - 需要和我们签订保密协...
我需要您来为我开发一些软件。该软件需适配Windows。
卖进斗二次开发，改造成多商户模式，大部分准备购买插件，没有插件的地方需要开发，可QQ[The administrator removed this message due to encouraging communication outside Freelancer.com, which breaches our Terms and Conditions - Section 13:Communication With Other Users.]联系请备注哦
参照 和 在这个网站基础上 第一页：选择城市（cookie 记住 所在城市。第二次访问直接进入第二页） 第二页就是以上两个参考网站的首页。上面功能键有: 切换 城市，切换英文版（这个链接到另一个网站），免费发帖，我的账号，所在城市名称（这个键回到第二页），招工，群聊讨论或信息，广告说明，购买广告。 第三页就是单独的帖子 这个网站的中间和两边会加很多广告位置。 不用注册也可发帖，邮件注册会有我的账号随时更新制作管理帖子。发帖时要填题目，描述。地址，照片 cookie记住以读帖子，变成红色。 回上一页，回到已读帖子的位置 注意群聊版面会有上下两个部分，上面是精华帖，后台会选出好帖子置顶，下面就是一般用户发的文字信息或照片（这个部分有点像微信聊天，但只是发文字和图片的帖子，也可以只发文字） 试用手机，如果需要进一步信息我会提供笔画照片。 please compare and need chinese version website base on these two website first page:choose a city like (cookie remember the city that user the return user will go straight to the 2nd page ) the 2nd page please see and its their 1st the top of this page ,there are buttons 【切换 城市，切换英文版（this is link to another
现有的网站是一个登记员工和借还电脑的系统。PHP 添加多人的借贷 1. Step, Select user from usertype Student/teacher/accounting. Show only Users how are not assigned, and with status ACTIVE. Should implement with search function which I had made. 2. Multi select students by checkbox, with footer number and those students will be repeated in next page 3, Show date range picker, preview those students you have chosen, and then chosen start date and end date 4. Click button to send, then the data add to database, can cancel seletion anytime
客户名單，出單，Call List，Sales Report & Booking Order。
我们公司由风险投资VC资本支持, 我们专注于发展/本土化高端品牌，正在打造成中国最大的休闲娱乐公司。我们正跟海內外的行业佼佼者合作, 开展不同的项目, 包括：马术中心、老爷车俱乐部 等。在上海的旗舰项目, 将成全国最顶尖的马术中心和家庭俱乐部， 老爷车俱乐部。 Magic is a venture backed company, specializing in developing/localising worldwide entertainment & leisure brands. We are on track to become the largest multi-brands, location-based leisure & entertainment management company in China. Projects include: family club, equine centre, classic car club, art museum, theme park, etc." logo用来代表上海迈奇公司旗下Arion高端英式家庭俱乐部，马术俱乐部，老爷车会所等，希望设计有品味，有质感。 Our logo will represent our "Arion" high end UK style family club, equine club and classic car club, looking for creative, elegant and quality designs. 我们需要3个logo, Arion 为主要的公司Logo, 然后Arion 马术俱乐部, Arion 老爷车俱乐部。 We are looking for 3 logos, Ar...
帮我们的产品写评论。我们的产品 eoonfirst cookie cutter,eoonfirst 是我们的品牌。如果有感兴趣的朋友，我们将长期合作！
...请参与我们的网站设计工作。这个项目只有设计2-4 网页，2-4 个 banners 和 简单的WordPress 网站； 成功完成第一个项目的设计师将会被邀请参与我们的第二个项目（马上开始在第一个项目完成后），网站设计工作设计的要求会高和复杂。 要求如下： Web/App Graphics • ability to take design (PSD) and create web friendly optimised graphical elements • familiar with all levels of CSS (through CSS3) • understand and ability to implement responsive design • understand browser limitations of Safari, IE, Firefox, Chrome; can design cross browser solutions Programming • competent to expert in WordPress & PHP (portfolio sites required) • understand modern javascript frameworks (minimum: JQuery) • understand SEO best practices Communications • fluent in English and Chinese
...请参与我们的网站设计工作。这个项目只有设计2-4 网页，2-4 个 banners 和 简单的WordPress 网站； 成功完成第一个项目的设计师将会被邀请参与我们的第二个项目（马上开始在第一个项目完成后），网站设计工作设计的要求会高和复杂。 要求如下： Web/App Graphics • ability to take design (PSD) and create web friendly optimised graphical elements • familiar with all levels of CSS (through CSS3) • understand and ability to implement responsive design • understand browser limitations of Safari, IE, Firefox, Chrome; can design cross browser solutions Programming • competent to expert in WordPress & PHP (portfolio sites required) • understand modern javascript frameworks (minimum: JQuery) • understand SEO best practices Communications • fluent in English and Chinese
注册推广链接： 中国国籍参与。 ························· 1、陆金所是平安银行旗下的融资平台，有平安银行这个后台在背后支持，信誉和安全性是比较有保障的。 2、做任务前请先清除浏览器缓存cookie，否则后台可能跟踪不到。 3、点击邀请链接注册： 4、注册后按要求填写实名资料，进行手机、邮箱验证，绑定银行卡并完成认证。 5、对认证银行卡的要求：目前针对以下8家银行开放认证：平安银行、中国工商银行、中国建设银行、中国农业银行、招商银行、中信银行、中国民生银行；认证的银行卡必须是陆金所网站通过了身份认证的用户本人名下的借记卡；借记卡需为活期账户，且账户状态为正常。 6、认证完成后，请跟贴回复包含您的注册用户名即可，最好如附件截图 7、通过我的邀请连接注册并完成银行卡认证的，后台会有记录，查询到即采纳。 8、每个完成2美元
开发一个BS版本的发电机远程管理系统。 系统组成：服务器+Browser+App+数据采集器 需要完成： 1.采集器本地配置软件，采用RS232与数据采集器通信。 2.监控系统(BS模式)，通过Internet，基于TCP与采集器通信，收集跟踪发电机相关数据；并管理跟踪发电机发电信息、位置信息等。 3.监控App软件。
需要开发一个微信上使用的微网站. 我们可提供UI图. 下星期一需要给客户演示. 有能力制作者请联系详谈. To develop html5 web application for mobile browser. it need to be done before 25th, Augest. Demo to customers.
我有和我们之前项目相关的持续性工作 'multi picture Upload bug of a website'
搜索引擎竞价广告点击器主要争对百度推广广告众所周知，竞价广告是按点击扣费的，一条广告被人点击一次扣几毛到几元不等的金钱我要的这个软件就是能够模拟网民点击广告，从而扣掉广告主的广告费要求：只有二条，就是能够有效点击扣费广告主的广告费，所以接任务者必需要有相关经验，了解搜索引擎扣费规则，二，我需要试用，好我马上会付钱 价格不是问题个人提供建议（虽然搜索引擎是按点击扣费，但并不代表乱点都会扣费）基本上满足以下条件才会扣费不同（每IP一天点击只算一次）2.浏览器Cookie没有记录同一天已经访问过该网站3.点击者电脑综合环境不同（此点搜索引擎用来判断是不是同一人在换IP恶意点击）4.网卡MAC地址不同5.点击次数不会太有规律，也不会突然增加太多点击次数（搜索引擎判断恶意点击的标准）基本以上条件都要满足，搜索引擎才会视为是网民正常点击以上只是我个人提供的参考条件，更多搜索引擎过滤规则，要开发者自已解决总之，软件合者的标准就是能够指定关键词，指定点某条广告，每次软件点击都要让广告被成功扣费有相关开发经验者联系我电话
I'm in need of a comprehensive, multi-tasking personal assistant AI to support me in a variety of ways. In addition to the standard tasks like scheduling appointments, managing emails, and setting reminders, you'll be responsible for quite a bit more: - Daily Eating Plan: This will involve keeping track of my dietary requirements and suggesting meal plans. - Warnings: I need to be alerted of any potential issues or conflicts that might arise. - Sports: I require assistance in tracking my sports activities and training regimes. - Calorie Calculations: It's important for me to track my calorie intake, so I'll need you to help me with this. - Heart Rate: Monitoring my heart rate and keeping track of this data. The ideal candidate for this job should have experien...
1 Need to build a website monitoring program to monitor changes in sub-pages of the landing page Detailed requirements: The website needs to have SQL function because batch site monitoring needs to be uploaded. 2 Identify the link to the final sub-page login keyword such as Proxy function and mobile phone UA because mobile phone batch UA is required Multi-thread monitoring 3 Filter duplicates and monitor changes in subpages of the website Set a custom time to refresh the web page 4 Send the new URL of the subpage change to the created group through the telegram machine
Olá, tenho um sistema simples de gestão feito em PHP com BD em MySQL, gostaria de converter esse BD para trabalhar de forma Multi Tenant (varias empresas no mesmo banco de dados em uma unica instalação), e tambem criar um painel administrativo para ativar e desativar essas empresas.
I am in need of a proficient developer to create a platform that garners reviews from both mobile applications and websites. The core function of this software development project will be: - Collecting both user-submitted text and star ratings - Presenting these collected rev...will be: - Collecting both user-submitted text and star ratings - Presenting these collected reviews on Google maps Ideal Skills and Experiences: - Experience in web and mobile application development - Familiarity with Google map APIs is susceptible - Strong grasp in designing intuitive, user-friendly interfaces - Previous experience in developing review or survey related tools This project is multi-faceted and has an influence over a wide audience, therefore the ability to deal with complex projects is ...
I need a virtual assistant who can help me with a range of tasks, including administrative, research, and customer support tasks. The ideal candidate will work part-time and have great communication skills. Key Tasks: - Help with administra...and Experience: - Proven experience as a virtual assistant or in a relevant role - Excellent organizational and time management skills - Strong communication skills, both written and verbal - Proficient in using Microsoft Office and Google Suite - Ability to handle customer inquiries and provide basic support Please apply if you have a part-time availability and the right skills to take on this multi-tasking role. YOU MUST BE A LATERAL THINKER NO EXCUSES WILL BE TOLERATED $100 AUD PER MONTH AFTER U GIVE ONE MONTH FREE TO PROVE UR ATTITUD...
I'm a beginner wanting to learn how to create my first React Native app. I'm interested in building a simple multi-page app for both Android and iOS. Ideal candidates should have: - Proficiency in React Native and mobile app development - Prior experience in creating multi-page applications - Excellent communication skills to teach a programming novice like me
...Chrome to perform searches and click on search results multiple times. Key Project Requirements: - The tool should be built using Python, Java or Visual Basic - The primary goal of the tool is to perform automated web browser searches and click on various results - The tool should utilize Google Chrome as the web browser To give you a better idea, the tool should: - Conduct multiple web searches on Google - Click on a configurable number of search results from the returned search page Ideal Skills and Experience: - Proficient in Python, Java or Visual Basic - Experience in browser automation and web scraping - Familiarity with Google Chrome's automation capabilities If you have experience with similar projects or expertise in the mentioned languages, I'...
...background, and other animations added. These should be creative and interactive to enhance the player experience. - Incorporate sound effects: Sound is an important aspect of any game and I'd like to include sound effects that enhance the overall experience. - Perform necessary bug fixes and improve the game's performance, rendering, scaling, and responsiveness: Ensuring the game runs smoothly on ANY browser (desktop or mobile) and without any issues is crucial. - Enhance the website's completeness and social media integration: The game should be fully integrated into the website and connected well with social media. - Improve the architecture to allow for future features: The game should be in a state that it can be easily expanded upon and updated in the future....
We at G4 are seeking h...expertise, we aim to ensure the utmost safety and satisfaction for our esteemed clientele. Key duties and requirements: - Pilot private jets (Type ratings for specific aircraft will be needed) - Possess training and certification in Instrument Flight Rules (IFR) - Have a Multi-engine Aircraft Rating - Extensive flying experience is critical for this role Necessary Skills & Experience: - Proven experience as a pilot one a private jet - Strong knowledge of aircraft systems and operations - IFR certification, Multi-engine aircraft rating and type ratings for specific aircraft Your role will be paramount in maintaining our high-standard flights and services and ensuring client satisfaction. If you meet the above criteria, we would l...
In need of a talented graphic designer who can effortlessly bring together various sports team logos into a single image. You will have at least one month to complete the task. Must haves include: • Knowledge of different image formats. I don't have a specific format in mind, so feel free to use what you think works best. • Strong graphic design experience, particularly with sports team logos. • Positive history of delivering projects on time. Your expertise will determine the result, but keep in mind that I'm looking for a design that can seamlessly incorporate different team logos. If this sounds like you, feel free to bid.
I am in need of a seasoned digital marketer who can proficiently handle SEO, social media management, and email marketing tailored to reach local customers. This role requires a keen understanding of how to effectively drive lead generation. Specific responsibilities include: * SEO: Optimize my website's organic search rankings to improve lead generation * Social Medi...ideal freelancer: * Experience with SEO, social media management, and email marketing * Proven track record of lead generation * Understanding of local market demographics and trends * Strong analytical skills to track success and pivot strategies as needed * Highly creative in developing engaging and innovative marketing strategies. Take your digital marketing skills to the next level in this multi-faceted r...
I need a small application prototype with the following features: Multi-Employer Job Portal/Admin app (Role Based access) User/applicant App (for Multiple applications to different employers) User Profile Document Upload (Save documents to Db and attachments to Blob Storage ) Send Emails to Employers and applicants back and forth 2 Apps in total ie. admin app and applicant app. job application requirements will be provided. Nodejs, angular, My SQL, ORM, Data Seeding, Migrations should be used.
I'm in need of a Point of Sale (POS) interface that works on both Android and iOS devices. The main functionality requirement for this interface is barcode scanning. Additionally, I need this POS interface...Android and iOS devices. The main functionality requirement for this interface is barcode scanning. Additionally, I need this POS interface to support multiple user profiles, each with their unique access levels. Key Project Requirements: - Develop a Point of Sale interface that functions on Android and iOS platforms. - Implement barcode scanning capabilities within the interface. - Create a multi-user system with different access levels for each user. I'm looking for a developer with experience in: - Android and iOS development - Barcode scanning integration - Use...
I need a highly experienced programming teacher who specializes in both Java and Python. I'm seeking advanced-level guidance, mainly through the following: - One-on-one mentoring: You will provide perso...practical application of these languages in the industry. Exit profiles such as the development of complex systems, application in advanced artificial intelligence, or extensive backend management would be ideal. - Advanced Level Programming: I need a tutor who can help me comprehend and implement advanced aspects of programming beyond basic syntax and concepts. Some topics of interest include multi-threading, database connectivity, advanced algorithms, machine learning, and AI. Please provide proof of your experience, qualifications, and past teaching/mentoring success w...
I'm in need of an experienced backend developer who can deliver comprehensive solutions for a medium-scale project. The tasks to be handled include: - Database management: You should have sound knowledge and experience in managing databases efficiently. - API Integration: Proficiency in successfully integrating APIs is a must. - Server Maintenance: You will also be responsible for maintaining the server to ensure smooth operations. Though the programming languages preferred by me were not specified, having experience in Java, Python, or PHP would be advantageous. This opportunity is best suited for developers with a knack for troubleshooting and those who can guarantee smooth backend functionality even during moderate traffic.
I need you to develop a DMX link board with NRF24L01 and PIC microcontorller. Multi universe. Point to multipoint. Safe and stable
I'm in need of an expert who can help me set up a multi-master Docker Swarm cluster across Delhi and Mumbai regions in an e2e network. The cluster should be designed primarily for disaster recovery, with specific requirements as follows: - **Cloud Provider**: I'd like the cluster to be set up in an e2e network. - **Network Type**: I need a public e2e network for this cluster. - **Primary Goal**: The main focus of this project is disaster recovery, so the cluster should be designed keeping this in mind. The ideal freelancer for this job should have in-depth knowledge and experience with Docker Swarm, network setup across regions, and disaster recovery strategies. Proficiency in setting up clusters on e2e network and ensuring they are highly available will be a great advan...
I am in need of a skilled freelancer who can help me build a comprehensive affiliate website that is designed to target both consumers and businesses. Key Requirements: - The website needs to be optimized for affiliate marketing, with an emphasis on product promotion. - ...efficiently. - The site must also provide valuable information and resources to our audience. Ideal Skills and Experience: - Proven track record in developing and designing affiliate websites. - Familiarity with lead generation techniques. - Understanding of SEO and content marketing. - Strong ability to create engaging and informative content for a diverse audience. If you have experience in multi-functional affiliate site creation and can help me reach both consumers and businesses effectively, please get...
I need a skilled professional to design and d...purpose of promoting events. I have a few specific features in mind for this site. Customer can book Pooja and other activities online with Payment Gateway. The content on the website will be managed by the admin only. I will be responsible for posting and updating the content. Ideal skills and experience for this project would include: - Proficiency in web development with experience in creating multi-language websites. - A good eye for design to ensure a visually appealing website. - Experience in implementing unique features such as event calendars and streaming services. - Prior experience in religious or community websites would be a plus. Please provide examples of previous websites you have designed that are similar to thi...
I need a skilled developer to help customize the Foodyman template for a variety of platforms. Key Details: - **Platforms**: The customization is needed for Android, iOS, and Web. The goal is to ensure a uniform, pleasant user experience across all these platforms. **Experience and Skills**: - **Proficiency with the Foodyman Template**: Experience with the Foodyman template will be a major asset, and A STRICT REQUIREMENT.
I am seeking an experienced digital marketing professional who can effectively handle multiple areas of digital marketing. This includes: - SEO: Enhancing the visibility and ranking of my websit...clients, young adults and e-commerce shoppers. Therefore, the strategies must be versatile enough to entice this diverse demographic. The main objectives are to amplify website traffic, bolster my search engine standings, generate valuable leads, enhance brand awareness, improve customer engagement and amplify social media following. Ideal candidates would have extensive experience in running multi-platform digital marketing campaigns and a proven track record in achieving similar goals. Your skills should include SEO, SEM, Social media marketing, blogging, web editing and email ...
...front-end build pipelines and tools - A knack for benchmarking and optimization - Familiarity with code versioning tools, such as Git - Familiarity with basic CSS, and Figma designing. **Preferred Qualifications** - Proficient understanding of TypeScript with ReactJS - Working knowledge of Tailwind CSS - Able to replicate Figma design to React code. - Experience in optimizing components for all browser platforms - Strong portfolio of both front-end and back-end development **What We Offer** - Competitive compensation package with an attractive hourly rate - Collaborative, fast-paced work environment - Opportunity to work on a variety of exciting projects - A supportive team that values your input and creativity If you are passionate about technology, constantly seeking to le...
I'm looking to buy a complete and *READY* code for a football management browser game (like Hattrick, Trophy Manager, etc.). Essential features include: - Registration - Team creation and player management - Tactics creation - Transfers - Game simulation - Leagues system. Preferred technologies are JavaScript and C#, but others are acceptable. I'm also open to offers for partially finished games.
I'm in need of a talented designer to create a minimalist and modern facade for my clothing store. The design should be both aesthetically pleasing and practical, reflecting the essence of a contemporary retail space. Key Requirements: - The selected materials for the facade are Glass, Metal, Wood, acp, aluminium pipe, and acp alternate sheet. Experience with these materials is a must. - The desired color scheme for the facade includes violet (#47143d), golden (#b99750), and white (#ffffff). However, I'm also open to other corporate-looking 3-color palettes. Store dimentions: Height- ground level to ground floor roof= 12 feet, remaining till top= 44 feet, total = 56 feet Width- 50 feet wide (at only ground floor, there are 2 shops having front space of 25 feet each) {refer imag...
...python3 programmer to create a sensor-data generator for the website www.voeazul.com.br. The objective is to send a POST request to the site with valid sensor-data in order to obtain a particular cookie (_abck) for data analysis purposes. The sensor data to be simulated includes mouse movements, keyboard interactions, and browser interactions. Key Requirements: - Create a sensor-data generator in Java or python3 - The generator should simulate mouse movements, keyboard interactions, and browser interactions - The sensor-data should be valid enough to trigger the generation of the _abck cookie upon sending a POST request to Ideal Skills and Experience: - Proficiency in Java/python3 programming - Experience in web scraping and automation - Knowledge of coo...
I'm in need of a skilled mobile app developer to create a ride booking app, with a design theme of 'Modern'. The app will be multi-platform, available on both Android and iOS. Key Features: - GPS Tracking: The app should have accurate and reliable GPS tracking to ensure smooth navigation and route optimization for drivers. - Payment Integration: Seamless and secure payment processing is a critical feature for the app. - Rating and Reviews: A feature allowing users to rate and review the service provided by drivers. The ideal freelancer for this project will have: - Proven experience in mobile app development, specifically ride booking apps or similar. - Proficiency in both Android and iOS platforms. - Expertise in GPS integration, payment gateways, and user review ...
I'm seeking a skilled developer to create a versatile e-signing utility. This tool should allow users to select the DSC ( usb token) inserted to the local machine and can sign PDF, XML, JSON, and Text files in bulk and with the following additional features: - Bulk Signing: It should support signing multiple files at once, with no specific limit. - Predefined Output Path: Users should have the option to assign a default output path for the signed files. - PDF Signature Display: For PDF documents, the utility should display the signature as an optional feature. The goal is to have this utility developed within a month. Ideal skills for this project include: - Proficiency in programming languages suitable for file processing (e.g. Python, Java) - Experience in developing software ...
...sports/esports betting, specifically in the sector of odds analysis. The individual should possess deep knowledge of statistical analysis, probability, and betting systems to provide valuable insights on betting odds. The particular sports/esports of interest are Football, Basketball, Cricket and Counter-Strike: Global Offensive. The detailed responsibilities are: - To provide one/two sure shot (can be multi) odd everyday with 1.5 odd minimum - Analyze real-time and historical stats for Football, Basketball, and CS:GO to find out possible outcome - Draw insightful inferences - Suggest betting strategies based on the analyzed odds - Provide regular reports and updates on the competitive odds in the market The ideal candidate will have an analytical mindset, strong mathematical...
