refactor(analysis/calculus/fderiv): prove has_fderiv_within_at.lim for any filter
#1805
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sgouezel
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Dec 15, 2019
src/analysis/normed_space/basic.lean
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| @@ -276,6 +276,19 @@ end | |||
| lemma continuous_nnnorm : continuous (nnnorm : α → nnreal) := | |||
| continuous_subtype_mk _ continuous_norm | |||
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| /-- If `∥y∥→∞`, then we can assume `y≠x` for any fixed `x`. -/ | |||
| lemma set_of_ne_mem_of_tendsto_norm_at_top {l : filter γ} {f : γ → α} | |||
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The name is a little bit weird. As we are not in the filter name space, what about ne_mem_filter_of_tendsto_norm_at_top?
…for any filter Also prove two versions of "directional derivative agrees with `has_fderiv_at`": `has_fderiv_at.lim` and `has_fderiv_at.lim_real`.
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…for any filter (leanprover-community#1805) * refactor(analysis/calculus/fderiv): prove `has_fderiv_within_at.lim` for any filter Also prove two versions of "directional derivative agrees with `has_fderiv_at`": `has_fderiv_at.lim` and `has_fderiv_at.lim_real`. * Rename a lemma as suggested by @sgouezel
anrddh
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May 16, 2020
…for any filter (leanprover-community#1805) * refactor(analysis/calculus/fderiv): prove `has_fderiv_within_at.lim` for any filter Also prove two versions of "directional derivative agrees with `has_fderiv_at`": `has_fderiv_at.lim` and `has_fderiv_at.lim_real`. * Rename a lemma as suggested by @sgouezel
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Also prove two versions of "directional derivative agrees with
has_fderiv_at":has_fderiv_at.limandhas_fderiv_at.lim_real.TO CONTRIBUTORS:
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