Each mathematical formula I have used in my blog till now was an image: I wrote them in a Word document using the equation editor by Microsoft (that I like very much), then I captured the screen and saved it as an image, and then I uploaded them in my blog.

In the past, I tried to find a way to write them as text, without succeeding. But it is in fact possible, by using the LaTeX syntax and a few HTML commands.

These are the first “true” mathematical formulae present in this blog. I will use this page to test the LaTeX syntax for mathematical expressions (a handbook is available here). In the table that follows, I present a series of relevant examples of LaTeX syntax. A useful resource for testing out LaTeX instructions is this website.

Output	String (to be included between ‘$latex’ and ‘$’)
	\mp&s=3
	\cdot&s=3
	\neq&s=3
	\leq&s=3
	\geq&s=3
	\ll&s=3
	\in&s=3
	\infty&s=3
	\Rightarrow&s=3
	\Leftarrow&s=3
	f_{X_1}&s=2
	\sqrt{b^2\,-\,4ac}&s=2
	\frac{\partial \Psi(x,y)}{\partial x}&s=3
	\sum_{k\,=\,0}^{\infty}&s=2
	\int_{A_1}\frac{\partial \Psi(x,y)}{\partial x}dx&s=2
	\int_{A_1}\int_{A_2}\frac{\partial \Psi(x,y)}{\partial x}dxdy&s=2
	i\hbar\frac{\partial}{\partial t}\left|\Psi(t)\right>=H\left|\Psi(t)\right>&s=2
	\begin{cases}x = b\ \y = 1 + x\end{cases}&s=2
	\begin{matrix} f(Ab)\,=\,f(A)\,-\,f(AB)\\f(aB)\,=\,f(B)\,-\,f(AB)\end{matrix}&s=2
	\begin{pmatrix} f(Ab)\,&\,f(A)\\f(aB)\,&\,f(B)\end{pmatrix}&s=2
	\\begin{bmatrix} f(Ab)\,&\,f(A)\\f(aB)\,&\,f(B)\end{bmatrix}&s=2
	\begin{Bmatrix} f(Ab)\,&\,f(A)\\f(aB)\,&\,f(B)\end{Bmatrix}&s=2
	\begin{vmatrix} f(Ab)\,&\,f(A)\\f(aB)\,&\,f(B)\end{vmatrix}&s=2
	latex \begin{Vmatrix} f(Ab)\,&\,f(A)\\f(aB)\,&\,f(B)\end{Vmatrix}&s=2