Please use \mathaccent for accents in math mode. ...el \^{i}n\c^{a}t fiecare este prieten\u{a}

Question

I wrote in this way:

\documentclass[11pt]{article}

\usepackage{amsmath,amssymb}

\usepackage{tikz-cd}

\usepackage[all,cmtip]{xy}

\usepackage{geometry}

 \geometry{

 a4paper,

 total={170mm,257mm},

 left=20mm,

 top=15mm,
 }
 \begin{document}

and I have a lot of errors of types

''Please use \mathaccent for accents in math mode. ...el \^{i}n\c^{a}t fiecare este prieten\u{a}''

or

''You can't use `\spacefactor' in math mode. ...el \^{i}n\c^{a}t fiecare este prieten\u{a}''

Welcome to TeX.SX! Instead of just posting the preamble of your document, please add a small minimal working example (MWE) that allows others to reproduce teh error you describe. — leandriis, Aug 17 '19 at 11:50
Math mode accents and Please use \mathaccent for accents in math mode are probably related. — leandriis, Aug 17 '19 at 11:54
It's hard to say without a full example that reproduces the error (a so-called MWE, see the first comment and its links), but probably the code somehow ended up in math mode where text mode is expected. Look at the very first error you get and try to fix it. This may well be a knock-on effect of a different error (forgotten $ or _ or ^ in text mode, ...). — moewe, Aug 17 '19 at 11:58
What is the reason of the use at the same time tikz-cd and xy package? — Sebastiano, Aug 17 '19 at 15:21

score 2 · Answer 1 · answered Aug 20 '19 at 21:34

It seems you inadvertently ended up in mathematics mode (special LaTeX mode for mathematical formulae), thus the complaints. Check if you opened an inline equation (e.g. by a $ or $) that you haven't closed (with a $ respectively $). Or perhaps you are using $this text in italics$ (that doesn't work right, while the mathematics fonts are sort-of-italics, the letter spacing is all wrong -- a word is handled as a string of one-letter variables multiplied --; use \textit{italics text}or better \emph{emphasized text}).

score 2 · Answer 2 · answered Aug 21 '19 at 01:19

(This should really be a comment, but it's easier to explain with more flexible formatting.)

Both error messages show this input string:

\^{i}n\c^{a}t

It isn't shown as math (it isn't between $...$ ), but some elements will be interpreted as math, and latex will switch to math mode when that happens.

If the switch to math mode was made before this string was encountered, the two text accents \^ (circumflex) and \c (cedilla) will be found invalid, not permitted in math mode. If the precessing gets that far without problems, the ^ will be found invalid as it is permitted only in math mode, and latex will switch into math mode. So there's a problem either way.

Actually, I suspect that the switch to math mode occurred before this string, but you haven't shown the whole message. If you will provide a compilable example that demonstrates the errors you show, that will make it much easier to experiment and identify the real problem.

Please use \mathaccent for accents in math mode. ...el \^{i}n\c^{a}t fiecare este prieten\u{a}

2 Answers2