T₀ -separation axiom　T₀ 分离公理

T₁ -separation axiom　T₁ 分离公理

T₂ -separation axiom　T₂ 分离公理

T₃ -separation axiom　T₃ 分离公理

T₄ -separation axiom　T₄ 分离公理

• zero bilinear form
• zero category
• zero chain
• zero characteristic
• zero-circuit
• zero class
• zero correlation
• zero-crossing
• zero curvature
• zero-curvature equation
• zero curve
• zero cycle
• zero-dagger
• zero defect
• zero degree
• zero-density
• zero-density hypothesis
• zero-density method
• zero-density theorem
• zero-derivative
• atomic event
• atomic expression
• atomic formula
• atomic interval
• atomicity