Laurent Duval's user avatar
Laurent Duval's user avatar
Laurent Duval's user avatar
Laurent Duval
  • Member for 8 years, 2 months
  • Last seen more than a week ago
60 votes

Is there any integral for the Golden Ratio?

36 votes

Examples of problems that are easier in the infinite case than in the finite case.

33 votes
Accepted

Why does topology rarely come up outside of topology?

31 votes

Is there a "positive" definition for irrational numbers?

23 votes

If squaring a number means multiplying that number with itself then shouldn't taking square root of a number mean to divide a number by itself?

16 votes

What is the meaning of the symbol "$\left|\underline{\;n\;}\right.$" for integer $n$?

13 votes

Why does L'Hopital's rule fail in calculating $\lim_{x \to \infty} \frac{x}{x+\sin(x)}$?

13 votes

Intuition behind Fourier and Hilbert transform

12 votes
Accepted

Variant of linear regression using perpendicular distance instead of vertical

12 votes

Knowing that for any set of real numbers $x,y,z$, such that $x+y+z = 1$ the inequality $x^2+y^2+z^2 \ge \frac{1}{3}$ holds.

11 votes

Apparently sometimes $1/2 < 1/4$?

10 votes

Unconventional mathematics books

10 votes

Why does the Cauchy-Schwarz Inequality even have a name?

10 votes

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

9 votes
Accepted

What does this double sided arrow $\longleftrightarrow$ mean?

8 votes

In simple English, what does it mean to be transcendental in math?

8 votes

Why is it not true that $\int_0^{\pi} \sin(x)\; dx = 0$?

8 votes

Find the sum of the squares of the first $n$ natural numbers

7 votes
Accepted

A continuous onto function from $[0,1)$ to $(-1,1)$

7 votes

Is there an explicit irrational number which is not known to be either algebraic or transcendental?

6 votes

What is the difference between the three types of logarithms?

6 votes

What is the most expensive item I could buy with £50?

6 votes

Understanding the Taylor expansion of a function

6 votes

What is a real-world metaphor for irrational numbers?

6 votes

Good "history of mathematical ideas" book?

5 votes

Why does the sum of the reciprocals of factorials converge to $e$?

5 votes

Why don't logarithms work here?

5 votes

Why is $y=\frac{x+y}{x}$ the same as $y=\frac{x}{x-1}$?

5 votes

Summation Problem (lower limit is variable)

4 votes

How to calculate $\lim_{x \to 0} \frac{x^{6000} - (\sin x)^{6000}}{x^2(\sin x)^{6000}}$?

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