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Many times in mathematics one has an assumption (call it Assumption A) that has an interesting variant (call it Assumption A'). I often see in textbooks Assumption A will be written with an equation number like (I) while Assumption A' will get the number (I') to emphasize that it is a variant of (I). Is there a way to do this in Latex without blowing up the automatic equation numbering?

fourierwho
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  • Welcome to TeX.SX! Could you add an image how it should look like (see below the "edit" button). Could you provide some code? – Bobyandbob May 15 '18 at 16:12
  • You can use \newtagform that comes with the mathtools package. –  May 15 '18 at 16:15
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    see this post: https://tex.stackexchange.com/questions/132401/equation-number-with-an-apostrophe – AML May 15 '18 at 16:24
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    Load the amsmath package and use \tag{A} for assumption A and \tag{A'} for assumption A'. This method doesn't "blow up [LaTeX's] automatic equation numbering". – Mico May 15 '18 at 16:37

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