Categories

The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.

• 10 (number) in art (1 member)
• 11 (number) in art (1 member)
• 1202 texts (1 member)
• 1760s dresses (1 member)
• 1760s portrait paintings of Russia (female) (1 member)
• 1768 portrait paintings from Russia (1 member)
• 180° rotation (1 member)
• 1895 in education in Russia (1 member)
• 18th-century oil portraits of sitting women at half length (1 member)
• 18th-century portrait paintings of females with blue dresses (1 member)
• 18th-century portrait paintings of women with engageantes (1 member)
• 18th-century portrait paintings of women with pearl bracelets (1 member)
• 18th-century portrait paintings of women with pearl chokers (1 member)
• 18th-century portrait paintings with columns (1 member)
• 18th-century three-quarter view portrait paintings of women, facing right (1 member)
• 1913 books djvu files (1 member)
• 1913 in mathematics (1 member)
• 19th-century childhood in painting (1 member)
• 19th-century genre paintings from Russia (1 member)
• 19th-century genre paintings in the Tretyakov Gallery (1 member)
• 19th-century schoolteaching in painting (1 member)
• 1D potential barriers (2 members)
• 1D potential steps (1 member)
• 1 (numeral) (1 member)
• 2-fold rotational symmetry (1 member)
• 2006-10-11 (1 member)
• 2006-11-10 (1 member)
• 21st-century maps of the world (1 member)
• 2D infinite square wells (1 member)
• 3-D glasses (1 member)
• 3-manifolds (3 members)
• 3D fractals (1 member)
• 6 (number) in art (1 member)
• 90 (number) (1 member)
• AB letter combinations (order) (1 member)
• AC waves (4 members)
• A Treatise on Electricity and Magnetism diagrams (1 member)
• Absolute value (2 members)
• Abstract algebra (1 member)
• Acceleration (2 members)
• Acoustic membrane animations (1 member)
• Airy function (1 member)
• Airy function with complex arguments (16 members)
• Algebraic functions (1 member)
• Algebraic geometry (3 members)
• Algebraic surfaces (1 member)
• Amoeba (mathematics) (1 member)
• Amplitude (1 member)
• Analemma (1 member)
• Angle bisector theorem (1 member)