List questions from exceptional-isomorphisms | MathQa

Projectivization and stereographic projection, or: Why nonlinear + nonlinear = linear?

Published on 13 Jan 2025 - 5:21

Find an isomorphism $PGL_2(F_3) \cong S_4$

Published on 12 Jan 2025 - 21:11

How can I prove that $PSL(2,3)\simeq A_4$?

Published on 12 Jan 2025 - 21:15

Show that $\mathfrak{so}(4)\cong \mathfrak{so}(3)\oplus \mathfrak{so}(3)$

Published on 12 Jan 2025 - 21:31

Is the seven-dimensional cross product unique?

Published on 12 Jan 2025 - 21:17

mathamatical structure where a bijection is not an isomorphism

Published on 12 Jan 2025 - 21:31

Which of these "minimal" semisimple Lie algebras aren't simple?

Published on 12 Jan 2025 - 21:27

is it a stronger property of equalizers?

Published on 12 Jan 2025 - 21:11

Quotient of binary icosahedral group by its center, i.e., $2I/\{\pm 1\}$ is isomorphic to $A_5$

Published on 12 Jan 2025 - 21:37

How is $\mathbb{F}_2^4$ related to an $8$ element set?

Published on 12 Jan 2025 - 21:18