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List Question

$1/2 = 1 - e^{-n(n-1)/2d}$ General Birthday Formula?

Little notation question about matrix multiplications / quadratic forms

Definition of a quadratic function

Is the answer to this equation non-real or no-answer?

Rewriting quadratic expression

Homographic image of a quadric of $\mathbb{P^3 (k)}$ that is $V(XT-YZ)$

Matrix of a quadratic form

If $\frac{(1+x)^2}{1+x^2}=\frac{13}{37}$, then find the value of $\frac{(1+x)^3}{1+x^3}$

Solution to a matrix quadratic

When does the bilinear form $x^TAy,$ with $x,y$ are non-negative vectors, vanish?

Is factoring primes $pq$ eqivalent to discovering $p+q$, thus binding $q$ and the search for $(p+q)$ when $(q/p) < 4$?

Problem set to accompany "A Course in Arithmetic"

Solving $x^\dagger A_ix=0$ , $x^\dagger x=1$

vector subset problem for linear approximation

Are there are infinitely many integers $n$ such that $x^2 +ny^2$ represents infinitely many primes?

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