User leftaroundabout

80 votes

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Looking for a function that approximates a parabola

answered Nov 26, 2020 at 15:19

30 votes

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Are angles ever multiplied?

answered Jun 27, 2011 at 0:20

21 votes

Why is a linear transformation called linear?

answered Jan 23, 2016 at 21:25

20 votes

Why are some non elementary integrals defined and others are not?

answered Feb 5, 2018 at 16:27

19 votes

why don't we define vector multiplication component-wise?

answered Aug 23, 2012 at 21:29

18 votes

In classical geometry why is a line considered to be parallel to itself?

answered Apr 18, 2018 at 12:02

15 votes

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Construct a continuous real valued function which takes zero on integers and such that image of function is not closed.

answered Oct 18, 2018 at 8:38

14 votes

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Is Sigma $\Sigma$ a mathematical way of doing a for loop?

answered Mar 12, 2016 at 17:57

12 votes

What is a good way to explain why the graph of polynomials do not exhibit ripples, even in an arbitrarily small interval?

answered Nov 19, 2017 at 12:25

10 votes

Two Dirac delta functions in an integral?

answered Aug 9, 2018 at 12:19

9 votes

What is the mathematical notation for rounding a given number to the nearest integer?

answered Sep 13, 2019 at 9:42

9 votes

Trigonometric functions -- sin - cos - tan - Differences, actual applications,

answered Oct 25, 2020 at 16:02

8 votes

When are complicated trig functions used?

answered Jul 9 at 15:01

7 votes

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Diameter and frontier in metric spaces

answered Jul 13, 2022 at 9:01

7 votes

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The misuse of Dirac's $\delta$

answered Oct 26, 2017 at 0:24

7 votes

Is there a mathematical symbol for "For every element"?

answered Jun 19, 2012 at 17:24

6 votes

Why does the derivative of sine only work for radians?

answered Jun 25, 2015 at 23:50

6 votes

Equation of a "tilted" sine

answered Sep 16, 2017 at 17:41

6 votes

What does the symbol nabla indicate?

answered Mar 27, 2018 at 19:38

6 votes

How do basis functions work?

answered Aug 13, 2016 at 12:52

6 votes

what is sine of a real number

answered Jul 14, 2016 at 9:20

5 votes

Why do we use von Neumann ordinals and not Zermelo ordinals?

answered Oct 29, 2018 at 12:33

5 votes

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FFT bins from exact frequencies

answered May 29, 2011 at 22:24

5 votes

What inner monologue appears when you read Mathematical expressions?

answered Nov 21, 2022 at 8:39

4 votes

In homotopy type theory, what are the intermediate values along a path?

answered Jul 18, 2022 at 11:23

4 votes

How is the Fourier transform "linear"?

answered May 4, 2012 at 18:36

4 votes

Accepted

Covariant Power Set Functor being injective on arrows.

answered Nov 11, 2014 at 19:02

4 votes

Monoids in Category Theory

answered Jul 4, 2015 at 8:29

4 votes

Derivative/integral relationship appears to disprove the fundamental theorem of calculus!!!

answered Jun 17, 2016 at 20:47

4 votes

Is a negative number squared negative?

answered Jul 3, 2016 at 22:24

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76 Answers

Looking for a function that approximates a parabola

Are angles ever multiplied?

Why is a linear transformation called linear?

Why are some non elementary integrals defined and others are not?

why don't we define vector multiplication component-wise?

In classical geometry why is a line considered to be parallel to itself?

Construct a continuous real valued function which takes zero on integers and such that image of function is not closed.

Is Sigma $\Sigma$ a mathematical way of doing a for loop?

What is a good way to explain why the graph of polynomials do not exhibit ripples, even in an arbitrarily small interval?

Two Dirac delta functions in an integral?

What is the mathematical notation for rounding a given number to the nearest integer?

Trigonometric functions -- sin - cos - tan - Differences, actual applications,

When are complicated trig functions used?

Diameter and frontier in metric spaces

The misuse of Dirac's $\delta$

Is there a mathematical symbol for "For every element"?

Why does the derivative of sine only work for radians?

Equation of a "tilted" sine

What does the symbol nabla indicate?

How do basis functions work?

what is sine of a real number

Why do we use von Neumann ordinals and not Zermelo ordinals?

FFT bins from exact frequencies

What inner monologue appears when you read Mathematical expressions?

In homotopy type theory, what are the intermediate values along a path?

How is the Fourier transform "linear"?

Covariant Power Set Functor being injective on arrows.

Monoids in Category Theory

Derivative/integral relationship appears to disprove the fundamental theorem of calculus!!!

Is a negative number squared negative?