# User talk:Wandynsky

Welcome to ProofWiki! Since you're new, you may want to check out the general help page. It's the best first stop to see how things are done (next to reading proofs, of course!). Please feel free to contribute to whichever area of mathematics interests you, either by adding new proofs, or fixing up existing ones. If you have any questions please feel free to contact one of the administrators, or post your question on the questions page.

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## Minor points

Generally we use displaystyle (we have the shortcut \ds here) in any math block with big operators like \sum, \prod, \bigoplus, etc. and colons before displayed blocks. Also bear in mind sources are compulsory for all definitions but optional for theorems. You're doing quite well form-wise so far. Caliburn (talk) 15:24, 24 July 2021 (UTC)

## move requests

Rather than raising a talk page every time you want one of your pages remnamed, feel free to add an invocation to the {{rename}} template. All such requests then automatically go into Category:Candidates for Renaming. --prime mover (talk) 16:16, 25 July 2021 (UTC)

## New topics

It is noted that there is a considerable amount of new material being generated in the field of category theory and algebraic geometry. But they all have redlinks in them.

In order for this stuff to be understandable, it is important that those redlinks be populated with definitions.

It is accepted that it is fun and exciting to post up all these new pages, and dull and tedious filling in the low-level stuff, but this new stuff has limited use till that is done.

The recommended technique for populating $\mathsf{Pr} \infty \mathsf{fWiki}$ is to start from the beginning of a source work and making sure that all its introductory material is fully covered before moving on to later chapters. In that way it is far more likely (unless the book is badly written) for all the groundwork to be covered, enabling less capable mathematicians than the creator of these new pages to be able to use the material as a learning resource.

While it is often the case that an enthusiast of a particular area of mathematics posts up abstruse and profound results without having done that structural underpinning, such resulting pages are of limited use. The philosophy of $\mathsf{Pr} \infty \mathsf{fWiki}$ is such as to provide full information so as to (in theory) enable any reader, at any level, to be able to trace back through all the definitions and subsidiary results and so completely understand any page so encountered.

Strangely, your user talk page appears never to have been populated, which is an anomaly -- new contributors are provided with a "welcome" section with all the links you need to the help pages and general intro to the website. It is puzzling as to why this happened, unless you joined the project back in $2008$ or so, before we put such a system in place. --prime mover (talk) 09:43, 27 July 2021 (UTC)

I understand the point you are making. My intent is to write some material on cohomology of schemes (Hartshorne Chapter III). For this I am working backwards from the definitions needed and successively remove all redlinks. That way I avoid producing content not directly relevant to the subject.
I've copied a Welcome page from elsewhere. My account was created probably a few years ago, but I've never used it before. --Wandynsky (talk) 10:20, 27 July 2021 (UTC)
Okay fair enough. It's an approach I haven't seen before. The usual thing is to start at the beginning and move forwards, and as for non-relevant material, everything has some use. --prime mover (talk) 10:24, 27 July 2021 (UTC)