User Jürgen Sukumaran

22 votes

Why does this iterative way of solving an equation work?

answered Apr 14, 2019 at 1:26

17 votes

Accepted

Motivation for Mirror-Descent

answered Feb 16, 2018 at 13:10

9 votes

Convex + Monotone =? Convex

answered Jun 7, 2018 at 10:36

8 votes

Accepted

Determine whether f is a function, an injection, a surjection

answered Apr 14, 2019 at 20:13

8 votes

Accepted

A Subspace of Discrete Topology is Compact iff. It is Finite

answered Feb 27, 2018 at 21:00

7 votes

Accepted

Given $f$ is strictly increasing, is $f$ bounded?

answered Jan 30, 2018 at 12:39

6 votes

Are there any big controversies in contemporary mathematical research?

answered Oct 4, 2017 at 9:35

5 votes

What comes after Differential Equations?

answered May 25, 2015 at 0:01

5 votes

Accepted

If the derivative exists when $x$ approaches a point, is $f$ differentiable at that point?

answered Jan 30, 2018 at 11:53

5 votes

If $\left\{x_n\right\}$ is a convergent sequence of points in $[a, b]$ and $\lim x_n = c$, then $c\in[a, b]$

answered Jun 2, 2019 at 21:34

5 votes

Show that $S^2$ is a biased estimator of $\sigma^2$

answered Aug 17, 2020 at 17:06

4 votes

why do we use the hyperbolic functions?

answered Mar 4, 2018 at 16:53

4 votes

Accepted

Limit of $\lim_{x\to 0^+}(1+\frac{1}{x})^x$

answered Mar 22, 2018 at 9:46

4 votes

Accepted

What is the graph of Rudin's 7.18 function

answered Mar 11 at 11:08

3 votes

Accepted

Finite element method: what are bilinear and linear forms?

answered Jan 29 at 10:17

3 votes

Accepted

Basis for eigenspace of Identity Matrix

answered Apr 5, 2018 at 8:38

3 votes

Theorem 1.13 (a) Rudin functional analysis. $V$ is one?

answered Apr 5, 2018 at 8:55

3 votes

What is the difference between intuition and conjecture in mathematics?

answered Feb 21, 2018 at 14:12

3 votes

Accepted

Evaluate $\int_{0}^{1}x e^{-3x} \ dx$

answered Oct 25, 2017 at 9:19

3 votes

Widespread, persistent mathematical disagreement?

answered Nov 1, 2014 at 22:09

3 votes

Accepted

Properties of triangles in non-Euclidean geometries

answered Nov 24, 2014 at 1:58

3 votes

What is the name for this operation?

answered Dec 7, 2015 at 23:48

3 votes

"The order of a differential equation is the highest derivative in the equation". What's wrong with this statement?

answered Jan 25, 2016 at 3:13

3 votes

Is there a name for numbers between 0 and 1?

answered Jan 25, 2016 at 19:52

3 votes

A subset S of $R$ is complete if and only if it is closed.

answered Jan 26, 2016 at 2:31

3 votes

Accepted

Showing that $\langle T(u),T(v)\rangle = \langle u, v \rangle$ implies $T$ is a linear isometry

answered Apr 11, 2016 at 4:28

3 votes

What do the spanning set and the basis look like geometrically?

answered Apr 18, 2016 at 19:42

3 votes

Accepted

Question: Properties of differential equation (linear, homogeneous, order, constant coefficients..)

answered Oct 4, 2017 at 10:53

3 votes

Pseudoinverse of the pseudoinverse of a matrix

answered Aug 12, 2020 at 14:10

3 votes

How do I make sense of integration by parts

answered Jan 30, 2020 at 10:59

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310 Answers

Why does this iterative way of solving an equation work?

Motivation for Mirror-Descent

Convex + Monotone =? Convex

Determine whether f is a function, an injection, a surjection

A Subspace of Discrete Topology is Compact iff. It is Finite

Given $f$ is strictly increasing, is $f$ bounded?

Are there any big controversies in contemporary mathematical research?

What comes after Differential Equations?

If the derivative exists when $x$ approaches a point, is $f$ differentiable at that point?

If $\left\{x_n\right\}$ is a convergent sequence of points in $[a, b]$ and $\lim x_n = c$, then $c\in[a, b]$

Show that $S^2$ is a biased estimator of $\sigma^2$

why do we use the hyperbolic functions?

Limit of $\lim_{x\to 0^+}(1+\frac{1}{x})^x$

What is the graph of Rudin's 7.18 function

Finite element method: what are bilinear and linear forms?

Basis for eigenspace of Identity Matrix

Theorem 1.13 (a) Rudin functional analysis. $V$ is one?

What is the difference between intuition and conjecture in mathematics?

Evaluate $\int_{0}^{1}x e^{-3x} \ dx$

Widespread, persistent mathematical disagreement?

Properties of triangles in non-Euclidean geometries

What is the name for this operation?

"The order of a differential equation is the highest derivative in the equation". What's wrong with this statement?

Is there a name for numbers between 0 and 1?

A subset S of $R$ is complete if and only if it is closed.

Showing that $\langle T(u),T(v)\rangle = \langle u, v \rangle$ implies $T$ is a linear isometry

What do the spanning set and the basis look like geometrically?

Question: Properties of differential equation (linear, homogeneous, order, constant coefficients..)

Pseudoinverse of the pseudoinverse of a matrix

How do I make sense of integration by parts