$$ Sponsor Ciro $$
中国独裁统治 China Dictatorship 新疆改造中心、六四事件、法轮功、郝海东、709大抓捕、2015巴拿马文件 邓家贵、低端人口、西藏骚乱
Mnemonic: in means into. So we are going into a
that is large enough so that we can have a different image for every input.
Domain, codomain and image
Formalization of mathematics
Ciro Santilli's Homepage