• 1 · Religion and Magic
• 2 · Nature
• 3 · Human Being, Man in General
• 4 · Society, Civilization, Culture
• 5 · Abstract Ideas and Concepts
• 6 · History
• 7 · Bible
• 8 · Literature
• 9 · Classical Mythology and Ancient History

• Top
• 4 · Society, Civilization, Culture
• 49 · education, science and learning
• 49D · mathematics

49D1 · arithmetic

• 49D11 · numerals
• 49D13 · scales of notation (arithmetic)
• 49D1(+1) · arithmetic (+ scholar, scientist (at work))
• 49D1(+3) · arithmetic (+ portrait of scholar, scientist)