deadlock 发表于 2025-3-28 17:59:31

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枯萎将要 发表于 2025-3-28 20:44:58

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cochlea 发表于 2025-3-29 00:51:22

Schauder’s Theoremontinuity argument (whose simplest version is given by Exercise 1.7). This argument demonstrates the ability to simplify the proof of the existence of solutions for equations with variable coefficients to that of equations with constant coefficients.

强制令 发表于 2025-3-29 06:48:16

HCI International 2021 - Posterstz theorem, Brouwer’s theorem and the domain invariance theorem. We will also address the study of Ekeland’s variational principle and Nash’s implicit function theorem, which play a key role in many research fields.

Endemic 发表于 2025-3-29 08:38:29

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diskitis 发表于 2025-3-29 12:25:16

Yali Chen,Zhenxi Gong,Qiyan Xing study several results related to the concept of convolution and which were at the heart of the concerns of harmonic analysis in the twentieth century: the Calderón’s reconstruction formula, the wavelet decomposition of Grossmann and Morlet as well as Wiener’s Tauberian theorem.

evasive 发表于 2025-3-29 18:19:57

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REP 发表于 2025-3-29 22:28:18

Fixed Point Theoremstz theorem, Brouwer’s theorem and the domain invariance theorem. We will also address the study of Ekeland’s variational principle and Nash’s implicit function theorem, which play a key role in many research fields.

syncope 发表于 2025-3-30 00:13:02

Fourier Seriesnction was representable by a convergent trigonometric series, which is incorrect.We will see counterexamples to the pointwise convergence of Fourier series and will show results on the convergence of Fourier series in the context of integrable functions.

amplitude 发表于 2025-3-30 04:08:57

Convolution study several results related to the concept of convolution and which were at the heart of the concerns of harmonic analysis in the twentieth century: the Calderón’s reconstruction formula, the wavelet decomposition of Grossmann and Morlet as well as Wiener’s Tauberian theorem.
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