Resolve "12 - more typo fixes"

Closes #49 (closed)

added 1 commit

• 7f44dfd0 - still formulas typos

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added 1 commit

• 6fb89c2c - Update src/12_band_structures_in_higher_dimensions.md

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added 2 commits

• 4aa52d4b - 1 commit from branch master
• 1ff03fbc - Merge branch 'master' into '49-12-more-typo-fixes'

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unmarked as a Work In Progress

enabled an automatic merge when the pipeline for 1ff03fbc succeeds

mentioned in commit 7c264789

merged