A dichotomy may be defined as a Dedekind cut for a weak ordering.
每晚鑽入被窩的一瞬,就像魚兒無憂無慮地甩着尾巴,潛入了温暖的水域。
Dedekind refuses the reductionism which suggests to reduce number to class or the extension of conception, though he agrees with Frege that every individual number is self-subsistent object.
Mean value of Dedekind sums over short intervals
Some Properties of the Generalized Dedekind Sums;