22,305 reputation
43070
bio website maths.adelaide.edu.au/…
location Adelaide, Australia
age 25
visits member for 1 year, 10 months
seen 45 mins ago

Taking a break for a while.


44m
reviewed Leave Closed closed form for $\binom{n}{0}+\binom{n}{3}+\binom{n}{6}+…+\binom{n}{n}$
1h
reviewed Close What's the lenght?
1h
reviewed Leave Closed need an equation
1d
reviewed Close Cryptography with Elliptic Curves
1d
comment Are inverse matrices unique?
@HenningMakholm: In verifying that $GL(n, \mathbb{F})$ is a group, we do not need to prove that if $A^{-1} = B^{-1}$ then $A = B$. My point was that this implication is true in any group, in particular $GL(n, \mathbb{F})$.
1d
comment Are inverse matrices unique?
General linear. The group $GL(n, \mathbb{F})$ is often called the general linear group.
1d
answered Are inverse matrices unique?
1d
reviewed No Action Needed Example of a continuous function that is monotone at no point
1d
answered Could anybody provide a more detailed explanation of a tangent equation in its general form?
1d
comment how to prove $ax + by = cx + dy \implies a = c, b = d$?
What are $a, b, c, d, x,$ and $y$? If $x$ and $y$ are linearly independent vectors, and $a, b, c, d$ are scalars, then this is true. If all six are numbers, then it is not necessarily true that $a = c$ and $b = d$.
1d
revised Complex numbers and their imaginary parts
added 100 characters in body
1d
answered Complex numbers and their imaginary parts
1d
reviewed Leave Open Abstract question about the rotation in 3D
1d
reviewed Leave Closed Incenter Geometry Proof
1d
reviewed Leave Closed Is there any similar math limerick?
1d
comment A persisting element in all subgroups.
@QuangHoang: Putting your mouse over the down arrow shows the text "This question does not show any research effort; it is unclear or not useful." I completely understand the downvote.
1d
reviewed Close Limits of Riemann zeta function
1d
reviewed Leave Open an example of a continuous bijection which is not a homeomorphism
2d
reviewed Approve suggested edit on Establishing the identity
2d
answered How many four digit numbers begin with $10$?