Mathematics
Ernie060's user avatar
Ernie060's user avatar
Ernie060's user avatar
Ernie060
  • Member for 4 years, 8 months
  • Last seen more than a month ago
  • Western Europe
Profile Activity
Stats
5,953
reputation
90k
reached
212
answers
0
questions
Communities
About

I am a mathematician who is fond of differential geometry and good-old analysis.

Badges
View all badges
4
gold badges
13
silver badges
29
bronze badges
Top tags
View all tags
115
Score
78
Posts
37
Posts %
55
Score
34
Posts
16
Posts %
35
Score
26
Posts
12
Posts %
34
Score
18
Posts
8
Posts %
33
Score
18
Posts
8
Posts %
25
Score
19
Posts
9
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
answer
10
If $f : [a,b]\to\Bbb R$ is continuous, are there $x_1,x_2\in (a,b)$ such that $\tfrac{f(b)-f(a)}{b-a} = \tfrac{f(x_1)-f(x_2)}{x_1-x_2}$?
Sep 14, 2018
answer
6
Mahalanobis distance invariant
Oct 6, 2019
answer
6
Evaluating $\int^1_0 \frac{x-1}{\ln x}dx$ using Leibniz's integral formula
Sep 23, 2018
answer
5
Realizing the wedge product of $\mathbb{R}^3$ as torsion or curvature tensor
Sep 30, 2018
answer
5
Is there a 4x4 unitary matrix with 0 diagonal and non-zero off-diagonal?
Sep 18, 2018
answer
4
Surface with prescribed first fundamental form
Sep 12, 2018
answer
4
$M =\{(t, \vert t \vert) \text{ }\vert t \in \mathbb{R} \} $ isn't a Smooth Submanifold
Oct 11, 2018
answer
4
Does differentiability on $(a, b)$ implies continuity on $[a, b]$?
Sep 13, 2018
answer
4
Projection of $\mathbb{R}^2$ onto the line $y=x$, but NOT with respect to the usual inner product.
Mar 29, 2019
answer
4
$A^TA=B^TB$. Is $A=QB$ for some orthogonal $Q$?
Sep 28, 2018
Top Meta posts
0
1
22
What's with some new contributors flagrantly violating the rules for answering questions?

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.