There exist infinitely many prime numbers.
\[ a^{p-1} \equiv 1\ \text{mod}\ p \] |
\[ a^{p-1} \equiv 1\ \text{mod}\ p \] |
\[\begin{split} a &= b + c \\ c &= d + e \\ a &= b + d + e \end{split}\] |
This — \(\ce{ 2H2 + O2 → 2H2O }\) — happens a lot.
\[\ce{2Fe2O3 + 3C → 4Fe + 3CO2}\] | (1) |
He read an article in The Washington Post
Let’s smelt some iron!
\[\ce{2Fe2O3 + 3C → 4Fe + 3CO2}\] | (1) |