Signed Numbers

• Arnauld's Paradox
• Negative
• Negative Integer
• Negative Number
• Nonnegative
• Nonpositive
• Nonzero
• Positive
• Positive Number
• R^-
• R^+
• Rule of Signs
• Sgn
• Sign
• Trichotomy Law
• Z^-
• Z^+
• Z^*