1 The minimum value of the integral 1 how can it be possible to add three odd numbers and the answer is even 1 How to interpret 1m+1s in english? 0 If $a$ is not square then there is a class $\mod 4a$ such that $a$ is a quadratic non-residue modulo any prime in that class. 0 Region of Convergence for Laurent Expansion

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### Questions (5)

 5 Real-valued function $f : \mathbb{R} \to \overline{\mathbb{R}}$ is continuous iff its graph is closed 3 Optimal angle to jump off a swing to maximise air time 1 Framing convergence as a topological question 1 Proof that every arithmetic progression which might contain a prime does so. 1 If $a$ is not square then there is a class $\mod 4a$ such that $a$ is a quadratic non-residue modulo any prime in that class.

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 1 inequality 1 puzzle 1 integration 1 recreational-mathematics 1 calculus 1 arithmetic 1 integral-inequality 0 number-theory × 3 1 unit-of-measure 0 quadratic-residues × 2