How to simplify $(\textbf{a} - \textbf{b})\times(\textbf{a}+\textbf{b})$?
119964
Prove: $1/2(a+b) \times (a - b) = b \times a$ - in three space
55031
Show any matrix $A_{n\times n}$ can be written as sum of two nonsingular matrices
120610
Find a subset of $S = \{(1, 0, i), (i, 2, -3), (2-i, 1+i, i)\}$ that forms a basis for $\textsf V = \operatorname{span}(S)$
71766
simplify boolean expression: xy + xy'z + x'yz'
39231
Construct a bijection between $\mathbb{Z}^+\times \mathbb{Z}^+$ and $\mathbb{Z}^+$
118024
Simplify the expression $\binom{n}{0}+\binom{n+1}{1}+\binom{n+2}{2}+\cdots +\binom{n+k}{k}$
2235
Showing $\text{Aut}_\mathsf{Grp}(\mathbb{Z}/2\mathbb{Z} \times \mathbb{Z}/2\mathbb{Z}) \cong S_3$
130137
How to define a Bijection between $(A^B)^C$ and $A^{B \times C}$
32760
Is $\mathbf{Q}(\sqrt{2}, \sqrt{3}) = \mathbf{Q}(\sqrt{2}+\sqrt{3})$?
89177
$\operatorname{adj}(AB) = \operatorname{adj} B \operatorname{adj} A$
57269
A special bijection between $\mathbb{R}\times \mathbb{R}$ and $\mathbb{R}$
17213
what operation repeated $n$ times results in the addition operator?
71767
What is the difference between $\Bbb{R^n}\times\Bbb{R^m}$ and $\Bbb{R^{m+n}}$?
73242
Simplify vector expression - is there something like "Factor" for vectors, dot products etc.?
15985
simplify $(a_1 + a_2 +a_3+... +a_n)^m$
80684
Counter example for $(A \times B) \cap (C \times D) = (A \cap C ) \times (B \cap D)$
12852
How to simplify complicated Recursion.