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Minor issue in sec.10.2.1 #265

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ctchou opened this issue Dec 1, 2024 · 0 comments

ctchou commented Dec 1, 2024 •

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In the following example, the curly braces around x seem redundant. The example works just fine without them.

example {X Y : Type*} [MetricSpace X] [MetricSpace Y] (f : X → Y) (a : X) :
ContinuousAt f a ↔ ∀ ε > 0, ∃ δ > 0, ∀ {x}, dist x a < δ → dist (f x) (f a) < ε :=
Metric.continuousAt_iff

ctchou changed the title ~~Minor issues in sec.10.2.1~~ Minor issue in sec.10.2.1

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