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Congruence

Explore Congruence on MathWorld


A congruence is an equation in modular arithmetic, i.e., one in which only the remainders relative to some base, known as the "modulus," are significant.

Congruence is a college-level concept that would be first encountered in a number theory course.


Classroom Articles on Number Theory (Up to College Level)

  • Continued Fraction
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  • Perfect Number
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  • Convergent
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  • Prime Counting Function
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  • Diophantine Equation
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  • Prime Factorization Algorithms
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  • Divisor Function
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  • Prime Number Theorem
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  • Euclidean Algorithm
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  • Quadratic Reciprocity Theorem
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  • Euler-Mascheroni Constant
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  • Squarefree
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  • Fermat's Last Theorem
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  • Totient Function
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  • Number Theory
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  • Transcendental Number
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  • Partition
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