I have a very simple problem. I want to write "a" in an equation, however output is .... Please see output. How i can overcome this problem?enter image description here

closed as unclear what you're asking by siracusa, user121799, Henri Menke, Stefan Pinnow, Sebastiano Aug 29 '18 at 4:57

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    Welcome to TeX.SX! Please help us help you and add a minimal working example (MWE) that illustrates your problem. Reproducing the problem and finding out what the issue is will be much easier when we see compilable code, starting with \documentclass{...} and ending with \end{document}. – albert Jul 9 '18 at 10:02
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    It looks like you are using a language package that redefines the arabic digits. Can you show us an example that reproduces the screenshot you get, please? In any way what you are typing should definitely be written in math mode: $A = (a_1, a_2, \dots, a_n)$ – moewe Jul 9 '18 at 10:14
  • Please see "a" carefully. The problem is there. – user108438 Jul 9 '18 at 10:26
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    Solved in comments in tex.stackexchange.com/questions/439880/diffrece-between-a-and-a – Johannes_B Jul 9 '18 at 10:45
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    Possible duplicate of Diffrece between "a" and $a$ – naphaneal Jul 9 '18 at 10:58

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