On the creation of a formula of Euler's Identity for quaternions
141610
Can Euler's identity be extended to quaternions?
12949
Inductive Proof of Euler's Formula $v-e+r=2$
23451
The new introduced EulerMatrix problem
69478
Deducing a $\cos (kx)$ summation from the $e^{ikx}$ summation
140249
Euler Product formula for Riemann zeta function proof
76902
Variation on Vandermonde's identity
18005
Angle notation for complex numbers in polar form
140140
An identity which applies to all of the natural numbers
4116
If we are handed the presentation $\langle i,j,k \mid i^2=j^2=k^2=ijk \rangle$ and nothing more, can we deduce that this is the quaternion group?
128602
Some integral representations of the Euler–Mascheroni constant
107090
Motivation for/history of Jacobi's triple product identity
39135
Representation of integers by ternary quadratic form $x^2+y^2-z^2$
55065
Getting Values From Quaternions
157946
Elementary derivation of certian identites related to the Riemannian Zeta function and the Euler-Mascheroni Constant
137175
Fermat's little theorem proof by Euler
35714
Adjoint pairs, triplets and quadruplets
100788
Proving Newton's identities