Diophantine Approximation

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2 domain-specific abstractions whose origin domain is Diophantine Approximation.

• Irrationality measure — A quantitative bound on how closely an irrational real or complex number can be approximated by rational numbers as denominator size grows.
• Littlewood conjecture — The open conjecture that every pair of real numbers admits arbitrarily strong simultaneous rational approximation with a common denominator in a multiplicative sense.