Removing vertical space before chapter headings.
57889
How to decrease spacing before chapter title?
35252
How do I trim whitespace?
95419
how to suppress "chapter" in \chapter (while keeping numbering)
46113
Adding vertical space at the start of a page
84645
biblatex/multicol: Incorrect vertical space after bibliography heading
41439
How to add vertical space after \hline without breaking vertical lines in a table
57263
how to remove 'Chapter' word only from headings?
68850
Increasing spacing between section number and title in the table of contents
149424
Space length between the chapter number and the chapter title
13298
Spacing before and after section titles
9389
Removing the space of caption when using algorithm
127015
Balance/flush columns at the end of each chapter in twocolumn layout
84735
Remove space above and below  tag HTML
122962
Headers of \chapters* take the headers of their previous \chapter
120659
How to remove white space before reference?
149627
Space before three dots?
77797
Inserting \S in front of section or chapter headings