The negative reals are an infinite set, that doesn't make "negative infinity" a real number though. Negativy infinity is a concept, that can be used in some mat

The negative reals are an infinite set, that doesn't make "negative infinity" a real number though. Negativy infinity is a concept, that can be used in some math frameworks, but it is not defined within R. See this exchange for details https://math.stackexchange.com/questions/2812355/does-infinity-belongs-to-the-set-of-all-real-numbers https://math.stackexchange.com/questions/2812355/does-infini...