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Equation Typesetting in Papers: 10 Common Mistakes

Cramped inline math, tiny parentheses, ragged multi-line work, text as italic variables—ten failure points in course reports and theses, and how to dodge them.

Course reports and theses fail at the same equation spots. Fix these ten and the pages usually look fine:

  1. Key results still stuck inline
  2. Multi-line derivations without align
  3. Unscaled parentheses around big fractions (missing \left \right)
  4. Subscript labels as italic variables (use \text{})
  5. * as multiplication with weird spacing
  6. Unmatched & / \\ in matrices
  7. The same quantity with inconsistent symbols
  8. Missing braces on limit/sum indices
  9. Screenshots of broken Word equations in the final PDF
  10. Pasting a whole block without ever previewing

Preview in the editor, then paste into Overleaf or Word. Before submit, skim the homework checklist once more.