A commutative ring in which every nonzero element has a multiplicative inverse. Examples: ℚ, ℝ, ℂ, 𝔽_p for p prime. The algebraic backbone of linear algebra.
A commutative ring in which every nonzero element has a multiplicative inverse. Examples: ℚ, ℝ, ℂ, 𝔽_p for p prime. The algebraic backbone of linear algebra.