New posts in Real Numbers

What is Tarski’s definition of real number multiplication?

Uniqueness of $\mathbb{R}$

A series such that $\sum {a_n}$ converges, but $\sum {a_{3n}}$ diverges.

Is there a bijective, monotonically increasing, strictly concave function from the reals, to the reals?

Proving $∀ε>0:x<y+\epsilon ⇒ x<y$

Showing that there exists a positive integer $t$ such that $5^t\equiv -3\pmod {2^{n+4}}$

Convert numbers between 0 and infinity to numbers between 0.0 and 1.0

A variant of Kronecker's approximation theorem?

Need help with the proof {needed for my algorithm}

A curiosity: how do we prove $\mathbb{R}$ is closed under addition and multiplication?