general
Derivation of second moment of area of a circle, a small question
I hope this question will be allowed on math.stackexchange, as the question is a mathematical one even though the subject might be from engineering. I am ...
Apr 18, 2026
Archive: General
general
How to Explicitly Round to a Given Number of Significant Digits
I have a given number: $N$, and I would like to explicitly round it to the nearest 2 significant digits I have the following working equation that seems v...
Apr 18, 2026
general
What is the difference between Formal Logic and Proofs?
I'm a graduate CS major, and am reading Social Processes and Proofs of Theorems and Programs. But I can't make any sense of it. After searching ...
Apr 18, 2026
general
3x6 matrix multiplied on a different matrix
I have a task for the Digital Signal Processing subject. I have to solve the task in Octave language, but at first I would like to understand how to solve...
Apr 18, 2026
general
Cumulative Distribution function of a poisson distribution in terms of it's parameter.
Let $P(X=n) = \lambda^ne^{-\lambda}/n!$ which is a Poisson distribution. I need to find the cumulative distribution function. The first think that comes t...
Apr 18, 2026
general
Number of distinct prime factors, omega(n)
Is there a formula that can tell us how many distinct prime factors a number has? We have closed form solutions for the number of factors a number has and...
Apr 18, 2026
general
Generating a binary code with maximized Hamming distance
I have a (seemingly) simple question about coding theory. I feel like the answer to this should be very obvious, but I'm having some troubles with it...
Apr 18, 2026
general
Partial fractions and using values not in domain
I'm studying partial fraction decomposition of rational expression. In this video the guy decompose this rational expression: $$ \frac{3x-8}{x^2-4x-5...
Apr 18, 2026
general
Conjectures (or intuitions) that turned out wrong in an interesting or useful way
The question What seemingly innocuous results in mathematics require advanced proofs? prompts me to ask about conjectures or, less formally, beliefs or in...
Apr 18, 2026
![Why is the determinant of the 0x0 matrix equal 1? [closed]](https://news.conceivablytech.com/uploads/why-is-the-determinant-of-the-0x0-matrix-equal-1-closed_720.jpg)
general
Why is the determinant of the 0x0 matrix equal 1? [closed]
I don't understand why the determinant of the 0x0 matrix equals 1.
Apr 18, 2026
