Ian's user avatar
Ian's user avatar
Ian's user avatar
Ian
  • Member for 10 years, 8 months
  • Last seen this week
171 votes
Accepted

Why do we use the word "scalar" and not "number" in Linear Algebra?

92 votes
Accepted

Still struggling to understand vacuous truths

71 votes

Are we allowed to compare infinities?

67 votes
Accepted

Why does the Newton-Raphson method not converge for some functions?

67 votes
Accepted

Examples of compact sets that are infinite dimensional and not bounded

64 votes
Accepted

Why doesn't a Taylor series converge always?

63 votes
Accepted

Which derivatives are eventually periodic?

62 votes

Prove if $X$ is a compact metric space, then $X$ is separable.

62 votes
Accepted

Do you lose solutions when differentiating to solve an integral equation?

48 votes
Accepted

Reversing the Order of Integration and Summation

38 votes
Accepted

Is the number $-1$ prime?

35 votes
Accepted

Differentiability implies continuity - A question about the proof

33 votes
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Difference between Modification and Indistinguishable

33 votes
Accepted

Why is it useful to show the existence and uniqueness of solution for a PDE?

29 votes

What is the fastest algorithm for finding the natural logarithm of a big number?

27 votes
Accepted

Is "you know everything" the (using sentential logic) logical negation of "you know nothing"?

26 votes
Accepted

Is it always safe to assume that a integral is zero if it has equal bounds?

26 votes
Accepted

How is the sequence 1, 1.4, 1.41, 1.414 generated?

24 votes
Accepted

Almost Everywhere Convergence versus Convergence in Measure

23 votes
Accepted

Why does this limit approach $e$?

22 votes
Accepted

Matlab wrong cube root

22 votes

Converting recursive equations into matrices

21 votes
Accepted

Relationship between inner product and norm

21 votes
Accepted

Is calculating the summation of derivatives "mathematically sound"?

21 votes
Accepted

What does this (double absolute value like) notation mean?

21 votes
Accepted

Why no simple proof by contradiction for mean value theorem?

20 votes

$\sum\limits_{n=1}^{10000000000000000} \frac{1}{n}$

19 votes

cutoff function vs mollifiers

19 votes
Accepted

Does a set with strictly positive Lebesgue measure contain an interval?

18 votes

Why define norm in $L_p$ in that way?

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