I don't like the $\xi$ symbol that mathpazo comes with, so I want to go back to Computer Modern for that symbol alone. How can I do this?


The code is in fontmath.ltx:


To make the change you want, you can fetch the CM definition of letters and change it into


and then

  • when i use \DeclareSymbolFont{CMlargesymbols}{OMX}{cmex}{m}{n}‎‎‎ \DeclareMathSymbol{\‎‏‎sum‎}{\mathop}{CMlargesymbols}{"50}‎‎‎, it results an error: "Command '\sum' already defined". how can i change the sum symbol?
    – smh
    Dec 7 '12 at 10:03
  • @smh I don't get this error; please, open a new question, with a link to this one, adding a minimal example producing the error.
    – egreg
    Dec 7 '12 at 12:13

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