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§3.12 Mathematical Constants

The fundamental constant

3.12.1 π=3.14159 26535 89793 23846

can be defined analytically in numerous ways, for example,

3.12.2 π=401dt1+t2.

Other constants that appear in the DLMF include the base e of natural logarithms

3.12.3 e=2.71828 18284 59045 23536,

see §4.2(ii), and Euler’s constant γ

3.12.4 γ=0.57721 56649 01532 86060,

see §5.2(ii).

For access to online high-precision numerical values of mathematical constants see Sloane (2003). For historical and other information see Finch (2003).