User E2R0NS

2 votes

2 answers

110 views

If $f$ is not continuous on $[1,\infty)$ but $\int_1^{\infty} f(x) \, dx$ converges, does $\int_1^{\infty} \frac{|f(x)|}{x^3} \, dx$ converge? [closed]

asked Dec 1, 2020 at 4:02

2 votes

2 answers

356 views

The unit circle is not compact under the Euclidean metric?

asked May 1, 2021 at 3:23

1 vote

2 answers

230 views

What is a generator for a direct product of groups of integers mod n which is cyclic?

asked May 3, 2021 at 19:44

1 vote

1 answer

537 views

Finding rank of augmented matrix

asked May 17, 2021 at 17:58

1 vote

1 answer

78 views

What is the characteristic of a ring with the property that if $mx = my$, then $x = y$?

asked Sep 25, 2021 at 19:59

1 vote

2 answers

43 views

Computing the limit of an integral of a function series

asked Dec 7, 2020 at 16:36

0 votes

3 answers

76 views

If $f_n$ converges uniformly to $f$ and $|f_n| \leq g$, then $|f| \leq g$ [closed]

asked Dec 8, 2020 at 19:21

0 votes

0 answers

56 views

Actuary STAM Question on mean and variance of aggregate losses when not identically distributed or independent

asked Feb 3, 2021 at 5:14

0 votes

0 answers

34 views

Which is preferable in a compound model: Monte Carlo simulation or normal approximation?

asked Feb 22, 2021 at 0:03

0 votes

2 answers

61 views

Confused about mathematically (formally) finding a conditional expectation in a double expectation problem versus in words

asked Mar 7, 2021 at 21:51

0 votes

2 answers

47 views

If $f$ is positive decreasing and continuous on $[0, \infty)$ I want to show that $\sum_{n=m+1}^{\infty} f(n) \leq \int_m^{\infty} f(t) \, dt$. [duplicate]

asked Dec 1, 2020 at 15:26

0 votes

2 answers

356 views

Prove that if $f$ is continuous at $a$, then it is bounded in a neighborhood of $a$ [closed]

asked Dec 1, 2020 at 23:24

0 votes

1 answer

57 views

If ${x_n}$ is a Cauchy sequence in a bounded set $S$, then ${f(x_n)}$ is a Cauchy sequence implies that $f$ is uniformly continuous on $S$. [closed]

asked Dec 2, 2020 at 0:58

0 votes

0 answers

64 views

Why can't I use the probability of success instead of the probability of failure?

asked May 31 at 22:35

0 votes

0 answers

52 views

Verify that I found an example of a degenerate random variable that is not constant on the probability space

asked Jul 7 at 3:45

0 votes

0 answers

54 views

Is there a bijection from the set of sequences of 0s and 1s to the reals? Is there a bijection from the set of sequences of reals to the reals?

asked Sep 23, 2020 at 20:23

0 votes

0 answers

41 views

Conditional probability of $Y > 250$ given $X$ and $Y$ is either greater than $250$ or it's not.

asked Oct 7, 2020 at 8:43

0 votes

3 answers

58 views

Triple integrating a function inside a sphere but below a paraboloid

asked Jun 30, 2021 at 18:31

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18 Questions

If $f$ is not continuous on $[1,\infty)$ but $\int_1^{\infty} f(x) \, dx$ converges, does $\int_1^{\infty} \frac{|f(x)|}{x^3} \, dx$ converge? [closed]

The unit circle is not compact under the Euclidean metric?

What is a generator for a direct product of groups of integers mod n which is cyclic?

Finding rank of augmented matrix

What is the characteristic of a ring with the property that if $mx = my$, then $x = y$?

Computing the limit of an integral of a function series

If $f_n$ converges uniformly to $f$ and $|f_n| \leq g$, then $|f| \leq g$ [closed]

Actuary STAM Question on mean and variance of aggregate losses when not identically distributed or independent

Which is preferable in a compound model: Monte Carlo simulation or normal approximation?

Confused about mathematically (formally) finding a conditional expectation in a double expectation problem versus in words

If $f$ is positive decreasing and continuous on $[0, \infty)$ I want to show that $\sum_{n=m+1}^{\infty} f(n) \leq \int_m^{\infty} f(t) \, dt$. [duplicate]

Prove that if $f$ is continuous at $a$, then it is bounded in a neighborhood of $a$ [closed]

If ${x_n}$ is a Cauchy sequence in a bounded set $S$, then ${f(x_n)}$ is a Cauchy sequence implies that $f$ is uniformly continuous on $S$. [closed]

Why can't I use the probability of success instead of the probability of failure?

Verify that I found an example of a degenerate random variable that is not constant on the probability space

Is there a bijection from the set of sequences of 0s and 1s to the reals? Is there a bijection from the set of sequences of reals to the reals?

Conditional probability of $Y > 250$ given $X$ and $Y$ is either greater than $250$ or it's not.

Triple integrating a function inside a sphere but below a paraboloid