Hi, y'all. I am
0nylvaidx\int_0^n ylvai\,dx
also known as Cosine.
I'm a student at The National School of Computer Science (ENI). I'm a frontend web developer, a math nerd, and uh... well, still figuring out the rest. I genuinely enjoy programming, mathematical structures, and everything related to logic and formal proofs. Here, you'll find my skills, projects, experiences, and how to reach me  —  feel free to explore around!
Skills
Tech stack
Frameworks & Librairies
Projects
const projectJS: string = "https://projet-eni-js.netlify.app/";

/* This was a school web project for the JavaScript module. We were given a predefined site structure :
- a homepage
- a page to solve a system of 3 equations with 3 unknowns using Cramer's rule
- a page for resizing an image using sliders
- a page dedicated to displaying advertisements
- and a page to view a list of products and perform accounting calculations */


const devHunt5dot0: string = "https://walkie-in-techmencia.netlify.app/";

/* This was our project for the DevHunt 5.0, an ENI Nexta Event 2025 competition.
We were given a very subjective theme : "In the digital era, technology plays a central role in daily life, but it can be overwhelming or inappropriate for young people. How can we introduce them to technology ?
So, to provide an answer to this problem, we have developed a digital children's book, dealing with important aspects of current technology, such as web browsing, AIs, cybersecurity and cybercrime, using a metaphorical storytelling. */
Experiences
Let tt be a time variable expressed in seconds.
t[0,86400],\forall t\in [0, 86\,400],\,let the function ff be defined by :
f(t)=DevHunt(t)f(t) = \text{DevHunt}(t)
limt+f(t)=5.0\lim_{t \to +\infty} f(t) = 5.0

I took part in DevHunt 5.0, a development competition, during the ENI Nexta Event 2025, where i served as a team leader.
Each team had exactly 24 hours to respond to a subjective theme, with no restriction on the technologies used.
As for us, we chose to build a web project, based on HTML + CSS + jQuery, and used Bootstrap for styling.

It was an intense experience, where teamwork, cohesion, organization, and the ability to manage both time and pressure mattered every single second.