Darij Grinberg

Results 11 issues of Darij Grinberg

Most importantly, I wish the color of the (currently purple) box in phase 4 was customizable. For example, making it black would let me quickly check no text is outside...

feature

- More little examples and parentheticals to help the reader check understanding. - Again, \C{compute} -> \C{Compute} since the two are not the same (right?) and it is the latter...

My suggestion: Theorems DER, DT and DEC are easiest to prove in the order DEC -> DT -> DER. You can prove Theorem DEC by induction, very much like you...

In the proofs of Theorem UTMR and Theorem ME, you are using the following fact: Theorem ELISB: Suppose $V$ is a finite-dimensional(!) vector space and $S$ is a linearly independent...

You write that "However, informally, a minor is a determinant of a submatrix, specifically det(A(i|j))". This is not quite true: the submatrix doesn't have to be of the form A(i|j),...

What does "multiplying a row by the scalar $\alpha$ and then adding it to another row" mean in Theorem DRMCA? To me, it sounds like the following two-step procedure: 1)...

Scroll down to Theorem 21 in [https://ar5iv.labs.arxiv.org/html/math/9902004](https://ar5iv.labs.arxiv.org/html/math/9902004). The source code of the big matrix is: ``` $$\begin{pmatrix} 1&0&0&0&\dots&0\\ X&X&X&X&\dots&X\\ X^2&2X^2&4X^2&\hphantom{3}8X^2&\dots&2^{m-1}X^2\\ X^3&3X^3&9X^3&27X^3&\dots&3^{m-1}X^3\\ \hdotsfor6\\ X^{n-1}&(n-1)X^{n-1}&(n-1)^2X^{n-1}&\hdotsfor2& (n-1)^{m-1}X^{n-1} \end{pmatrix},$$ ``` The `\hdotsfor6` part should...

bug
medium
figures
xy-graphics

See the proof of Lemma 3.2 in [https://ar5iv.labs.arxiv.org/html/2109.02101v1](arXiv:2109.02101v1): The commutative diagram gets cropped as if each object was just a single symbol wide/high, even if it is not. The diagram...

bug
medium
fidelity
xy-graphics

Search for "Summing these equalities over all" in [arXiv:2110.03108v1](https://ar5iv.labs.arxiv.org/html/2110.03108v1) and look at the align environment below. It has two tags: (35) and (36). But the first tag should not be...

bug
needs-latex-package
math-expressions
fidelity

This is awkward because it's due to bad LaTeX, but may still be worth fixing. Here is some code from the abstract of [https://ar5iv.labs.arxiv.org/html/2309.05340](https://ar5iv.labs.arxiv.org/html/2309.05340): `\operatorname*{cyc}\nolimits_{\ell}` This is, of course, self-contradictory,...

bug
medium
math-expressions