Which quaternions are solutions of $x^2+1=0$?
114258
Stuff which squares to $-1$ in the quaternions, thinking geometrically.
58311
How to find the solution of a quadratic equation with complex coefficients?
137015
Solutions for $a^2+b^2+c^2=d^2$
41689
Find all solutions: $x^2 + 2y^2 = z^2$
103020
Find all integral solutions of $ x^4 + y^4 + z^4 -w^4 = 1995 $
80895
half sine and half cosine quaternions
55065
Getting Values From Quaternions
105147
Converting a quaternion in a right to left handed coordinate system
39135
Representation of integers by ternary quadratic form $x^2+y^2-z^2$
45454
Pairs of $(p,q)$ such that $p^2 + 1 = 2 q^2$?
141610
Can Euler's identity be extended to quaternions?
130683
Quaternion group associativity
60902
Find general solution for the equation $1 + 2 + \cdots + (n − 1) = (n + 1) + (n + 2) + \cdots + (n + r) $
152591
For which prime numbers $p$ does the congruence $x^2 + x + 1 \equiv 0 \pmod{p}$ have solutions?
946
How to find solutions of linear Diophantine ax + by = c?
20034
Does $a^2+b^2=1$ have infinitely many solutions for $a,b\in\mathbb{Q}$?
63194
Find all integer solutions to $x^2-2y^2=1$