Two Definitions for Continuity? | Part 2 of 3 | Epsilon-Delta Definition implies Open Set Definition

preview_player
Показать описание
In the second part of the Two Definitions of Continuity series we prove that the epsilon-delta definition implies the open set definition.

Twitter:

Reddit:
Рекомендации по теме
Комментарии
Автор

when you say any open set in Y are we implying the image of f? I’m wondering why I always see Y (the codomain) because maybe there are elements of Y with no preimage (unless f is onto)?

samuelarnorath