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Trevor J Richards's user avatar
Trevor J Richards's user avatar
Trevor J Richards's user avatar
Trevor J Richards
  • Member for 13 years, 5 months
  • Last seen this week
9 votes

Is it true that $0.999999999\ldots=1$?

7 votes

Use of $\mapsto$ and $\to$

6 votes
Accepted

If a function is smooth is 1 over the function also smooth

4 votes
Accepted

Absolutely convergent series

4 votes

Is there a function with the property$ f(n)=f^{(n)}(a)$

4 votes
Accepted

Doubt about isomorphic groups!

3 votes

Dot Product of a Non-Zero vector with a Null Vector

3 votes

Which rational functions are derivatives of rational functions?

3 votes

Is an assumption a necessary or sufficient condition?

3 votes

Convergence testing involving factorial and square root

3 votes

Prove that $\lim cf(x) = c\lim f(x)$

3 votes
Accepted

Even trigonometric functions are dense

2 votes

Diameter calculation

2 votes

Confused about transfinite induction

2 votes
Accepted

Show the level curves of $\log|f(z)|$ are orthogonal to those of $\operatorname{arg}(f(z))$.

2 votes

How to check a polygon in $\mathbb{R}^2$ for convexity.

2 votes
Accepted

How to compute $f(x)=x\ln{x}$ at $x=0$?

2 votes

The Square Root of a Positive Irrational is Irrational

2 votes
Accepted

When do we flip the inequality?

2 votes

Why can't we do substitution in differentiation but is it ok in Taylor series?

2 votes

Bounded faces of a planar path

1 vote
Accepted

is $E(x),E(y) ↦ E(x+y)$ well defined?

1 vote

Two approaches to combinatorics with deck-of-card problems

1 vote

Super Simple question on Logic and Modus Ponens

1 vote

Work done to fill up a spherical tank

1 vote

Distance, rate, time for traveling on river

1 vote

Function's analytic continuation is its own derivative

1 vote

Counterexamples for $f(\overline{A}) = \overline{f(A)}$ and $\overline{f^{-1}(B)} = f^{-1}(\overline{B})$ in (non-)continuous mapping $f: X \to Y$

1 vote

Calculating the conditional probability Prob(A|B)

1 vote
Accepted

Discontinuity of second kind with some properties