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2024-11-18

math-memes:

Mr incredible meme. Happy face: "Counting numbers, haha" ℕ = {1,2,3,...} Happy face: "Just two natural numbers!" ℤ={a-b|a,b ∈ ℕ} Happy face: "Just two integers!" ℚ={a/b | a,b ∈ ℤ, b ≠ 0} Black and white shocked, despaired face, devoid of any hope: "The limits of infinite convergent Cauchy sequences of rational numbers" ℝ={lim n → ∞ a(n)|a:ℕ →ℚ, ∀ ε>0. ∃N∈ℕ. ∀n>N. |a(n)-a(N)|<ε} Happy face: "Just two real numbers!" ℂ = {a+bi|a,b∈ℝ}ALT
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