Text: in 1933 he published a theorem on convex polyhedra and an elementary proof of the existence of a centre of symmetry in a three-dimensional convex polyhedron.

Correct capitalization: In 1933 he published A theorem on convex polyhedra and An elementary proof of the existence of a centre of symmetry in a three-dimensional convex polyhedron.


Text: social api is completely removed.

Correct capitalization: Social API is completely removed.


Text: tip: incorrect van file association errors can be a symptom of other underlying issues within your windows operating system.

Correct capitalization: Tip: Incorrect VAN file association errors can be a symptom of other underlying issues within your Windows operating system.


Text: 10th year distance and area calculations

Correct capitalization:
10th year Distance and area calculations