§27.1 Special Notation
(For other notation see Notation for the Special Functions.)
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positive integers (unless otherwise indicated). |
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greatest common divisor of ![]() ![]() ![]() ![]() |
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greatest common divisor of
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sum, product taken over divisors
of ![]() |
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sum taken over ![]() ![]() ![]() ![]() |
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prime numbers (or primes): integers (![]() |
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sum, product extended over all primes. |
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real numbers. |
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natural logarithm of ![]() ![]() |
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Riemann zeta function; see §25.2(i). |
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Jacobi symbol; see §27.9. |
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Legendre symbol; see §27.9. |