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Reinstate Monica's user avatar
Reinstate Monica's user avatar
Reinstate Monica's user avatar
Reinstate Monica
  • Member for 9 years, 11 months
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40 votes

Is $\exp(x)$ the same as $e^x$?

22 votes

Is there a "positive" definition for irrational numbers?

19 votes
Accepted

Prove that if $f: \mathbb{R} \to \mathbb{Q}$ is continuous then $f$ is constant

19 votes

Can you pick a random natural number? And a random real number?

11 votes

How does this discontinuity occur in evaluating a nested square root?

10 votes
Accepted

Definition of continuity in topological spaces does not seem quite right.

9 votes

Finding product without working it out

9 votes

How does linear algebra help with computer science?

9 votes

False homework proof?: The image of an element has the same order.

7 votes

Are the equations $2x - 2y = 11, x = y - 2$ unsolvable?

7 votes
Accepted

Homology and Homotopy in the Plane

7 votes

Rank nullity theorem -bijection

6 votes

What sets does $\mathbb{N}$ include?

5 votes

differentiate *g(x)* if $g(x)=e^xf(e^{-x})$

5 votes

What concept does an open set axiomatise?

5 votes
Accepted

Is a prime to the power of a fraction always irrational?

5 votes
Accepted

Unique morphism from the additive group $\mathbb Q$ to $\mathbb Z$

5 votes

Quick question about baby Rudin: Theorem 2.40.

4 votes
Accepted

Factor Theorem (Finding values of a and b)

4 votes
Accepted

The operation before addition

4 votes
Accepted

Identifying $\mathbb{C}^*/\mathbb{R}^{+}$

4 votes
Accepted

give a counter example that $T^n$ is contraction will not imply that $T$ is contraction.

4 votes
Accepted

Can the choice of epsilon be arbitrary in epsilon-delta proofs?

4 votes
Accepted

Fractions with numerator and denominator both odd

4 votes
Accepted

If a continuous function f equals its inverse then there is x such that f(x)=x

4 votes
Accepted

submodular-like functions on $\mathbb{R}$

4 votes
Accepted

A trivial example of when the union of two sigma algebras is not a sigma algebra

3 votes

tough factorisation problem

3 votes

What can we say about the rate of growth of a function growing faster than all polynomials?

3 votes
Accepted

Principal ideal of $\mathbb{Z}[x]$