7.25.1 Top new questions this week

7.25.1.1 Is there a package that can automatically align and number a series of calculations?
7.25.1.2 Tikz polynomial very jittery
7.25.1.3 How to change the dot of the letter "i" to another character?
7.25.1.4 Draw a solid with circular base & square cross-sections in TikZ
7.25.1.5 Greek letter with two dots over in text mode
7.25.1.6 Remove apostrophe from greek subfloat numbering
7.25.1.7 Converting letters to numbers (e.g., A=0, B=1, et cetera)
7.25.1.1 Is there a package that can automatically align and number a series of calculations?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=595326

This is what I am currently doing with the alignat environment of the amsmath package. But I find the syntax heavy and not very user-friendly. 
I would like the numbering to be automatic a) ... b) ... ... 
[horizontal-alignment] [alignment]
 
asked by AndrA~(c)C https://tex.stackexchange.com/landing/r/digest?cta=user&id=138900 8 votes
answered by David Purton https://tex.stackexchange.com/landing/r/digest?cta=user&id=87678 12 votes
7.25.1.2 Tikz polynomial very jittery

https://tex.stackexchange.com/landing/r/digest?cta=question&id=595438

I am trying to plot a polynomial with coefficients found by interpolation. The result is very jittery with Tikz. 
How can I improve this please ? 
\begin{tikzpicture}[scale=1] 
\tikzset{declare function={... 
[tikz-pgf] [floats] [plot] [smooth]
 
asked by nwins https://tex.stackexchange.com/landing/r/digest?cta=user&id=241242 8 votes
answered by Rmano https://tex.stackexchange.com/landing/r/digest?cta=user&id=38080 7 votes
7.25.1.3 How to change the dot of the letter "i" to another character?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=595828

How to change the dot of the letter "i" to another character, so that works on Latex/MathJax. 
For example: 
$i^\star$, how to replace the dot by the star? 
When I type A^\264 + i displays: 
A~\[DiscretionaryHyphen] 
Is ... 
[fonts] [symbols] [positioning] [letters]
 
asked by VerA~\263nica Rmz. https://tex.stackexchange.com/landing/r/digest?cta=user&id=235725 7 votes
answered by Steven B. Segletes https://tex.stackexchange.com/landing/r/digest?cta=user&id=25858 14 votes
7.25.1.4 Draw a solid with circular base & square cross-sections in TikZ

https://tex.stackexchange.com/landing/r/digest?cta=question&id=595910

I want to draw a solid with these specifications in TikZ. The base of the solid is the disk x^2+y^2\leq 4. The cross-sections by planes perpendicular to the y-axis between y=-2 and y=2 are squares ... 
[tikz-pgf] [tikz-3dplot]
 
asked by Mohammadi https://tex.stackexchange.com/landing/r/digest?cta=user&id=237094 7 votes
answered by Juan CastaA~+-o https://tex.stackexchange.com/landing/r/digest?cta=user&id=231368 10 votes
7.25.1.5 Greek letter with two dots over in text mode

https://tex.stackexchange.com/landing/r/digest?cta=question&id=595697

I want to write the Greek letter theta with two dots over it in text mode, but I haven't gotten it to work yet. 
I have both these packages: 
\usepackage{amsmath} 
\usepackage{textgreek} 
and I have ... 
[amsmath] [greek] [text] [text-mode]
 
asked by Veronika https://tex.stackexchange.com/landing/r/digest?cta=user&id=241376 7 votes
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 8 votes
7.25.1.6 Remove apostrophe from greek subfloat numbering

https://tex.stackexchange.com/landing/r/digest?cta=question&id=595551

I run this: 
\documentclass{article} 
\RequirePackage[LGR,T1]{fontenc} 
\RequirePackage[english,greek]{babel} 
\usepackage[utf8]{inputenc} 
\RequirePackage{alphabeta,csquotes} 
\usepackage{mwe} 
\usepackage{... 
[numbering] [subfloats] [minipage] [greek]
 
asked by GiaFil7 https://tex.stackexchange.com/landing/r/digest?cta=user&id=241276 7 votes
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 5 votes
7.25.1.7 Converting letters to numbers (e.g., A=0, B=1, et cetera)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=595582

I recently asked the opposite question, and got some really awesome answers, but just realized I'm uncertain of a counterpart for converting letters to numbers. 
Here's the code I'm using to convert ... 
[macros] [alphabet] [convert] [transformation]
 
asked by Justin Troutman https://tex.stackexchange.com/landing/r/digest?cta=user&id=240938 6 votes
answered by Phelype Oleinik https://tex.stackexchange.com/landing/r/digest?cta=user&id=134574 6 votes