Tom M. Apostol, An Elementary View of Euler's Summation Formula, The American Mathematical Monthly, Vol. 106, No. 5 (May, 1999), pp. 409-418 ...

Tom M. Apostol, Another Elementary Proof of Euler's Formula for ζ (2n), The American Mathematical Monthly, Vol. 80, No. 4 (Apr., 1973), pp. 425-431 ...

Euler’s identity is an equality found in mathematics that has been compared to a Shakespearean sonnet and described as " the most beautiful equation." It is a special case of a foundational ...

No matter how the globe is triangulated, Euler’s formula holds. Euler’s Gem provides a bridge between geometry and topology. In geometry, lengths and angles are fixed.