ModelProd — Mathlib

English

ChartAt on the product space equals the product of charts: chartAt (ModelProd H H') x = chartAt H x.fst .prod chartAt H' x.snd.

Русский

ChartAt на пространстве-образце равен произведению карт: chartAt (ModelProd H H') x = chartAt H x.fst .prod chartAt H' x.snd.

LaTeX

$$prodChartedSpace_chartAt$$

Lean4

/-- Same thing as `H × H'`. We introduce it for technical reasons,
see note [Manifold type tags]. -/
def ModelProd (H : Type*) (H' : Type*) :=
  H × H'

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