Continuous mappings | Sheaf theory
In mathematics, the direct image functor is a construction in sheaf theory that generalizes the global sections functor to the relative case. It is of fundamental importance in topology and algebraic geometry. Given a sheaf F defined on a topological space X and a continuous map f: X → Y, we can define a new sheaf f∗F on Y, called the direct image sheaf or the pushforward sheaf of F along f, such that the global sections of f∗F is given by the global sections of F. This assignment gives rise to a functor f∗ from the category of sheaves on X to the category of sheaves on Y, which is known as the direct image functor. Similar constructions exist in many other algebraic and geometric contexts, including that of quasi-coherent sheaves and étale sheaves on a scheme. (Wikipedia).
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From playlist Photoshop
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From playlist Photoshop
Google Vision API in Python : Data Science Code
EASIEST way to perform powerful image detection in Python! Link to code: https://github.com/ritvikmath/Time-Series-Analysis/blob/master/Google%20Vision%20API.ipynb Information on quotas: https://cloud.google.com/vision/pricing
From playlist Python Basics
Sometimes a closeup works best, but other times you may want a wider-angle shot. You can experiment by moving closer and farther away from your subject, or by using your camera's zoom. We hope you enjoy! To learn more, check out our written lesson here: https://edu.gcfglobal.org/en/digita
From playlist Digital Photography
Beginning Graphic Design: Images
In this video, you’ll learn the basics of using images in graphic design. Visit https://www.gcflearnfree.org/beginning-graphic-design/images/1/ for our text-based lesson. This video includes information on: • Finding quality stock images • Editing images using cropping, resizing, and othe
From playlist Graphic Design
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From playlist 3D Printing
This video is used for Hologram technology, just make the hologram device at home with a very simple way, I'll put a video of how to make the Hologram device. Enjoy!
From playlist OPTICS
Serge Bouc: Correspondence functors
Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b
From playlist Algebraic and Complex Geometry
A (proper) introduction to derived CATegories
While there are introductions to derived categories that are more sensible for practical aspects, in this video I give the audience of taste of what's involved in the proper, formal definition of derived categories. Special thanks to Geoff Vooys, whose notes (below) inspired this video: ht
From playlist Miscellaneous Questions
Commutative algebra 47: Colimits and exactness
This lecture is part of an online course on commutative algebra, following the book "Commutative algebra with a view toward algebraic geometry" by David Eisenbud. We discuss the question of when a colimit of exact sequences is exact. We first show that a colimit of right exact sequences i
From playlist Commutative algebra
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From playlist Photoshop
Mr LIMA de CARVALHO e SILVA - From Essential Inclusions to Local Geometric Morphisms
It is well known that, given a site of denition, a subtopos of Grothendieck topos can be obtained by strengthening the Grothendieck topology, thus obtaining an inclusion of toposes. An essential inclusion is one where the inverse image functor of this inclusion has a left adjoint. Kelly an
From playlist Topos à l'IHES
On two geometric realizations of the anti-spherical module - Tsao-Hsien Chen
Geometric and Modular Representation Theory Seminar Topic: On two geometric realizations of the anti-spherical module Speaker: Tsao-Hsien Chen Affiliation: University of Minnesota, Twin Cities; Member, School of Mathematics Date: March 03, 2021 For more video please visit http://video.ia
From playlist Seminar on Geometric and Modular Representation Theory
Geordie Williamson: Langlands and Bezrukavnikov II Lecture 20
SMRI Seminar Series: 'Langlands correspondence and Bezrukavnikov’s equivalence' Geordie Williamson (University of Sydney) Abstract: The second part of the course focuses on affine Hecke algebras and their categorifications. Last year I discussed the local Langlands correspondence in bro
From playlist Geordie Williamson: Langlands correspondence and Bezrukavnikov’s equivalence
Link: https://www.geogebra.org/m/D4hmNy9M
From playlist 3D: Dynamic Interactives!
Towards a modular "2 realizations" equivalence - Simon Riche
Geometric and Modular Representation Theory Seminar Topic: Towards a modular "2 realizations" equivalence Speaker: Simon Riche Affiliation: Université Clermont Auvergne; Member, School of Mathematics Date: May 05, 2021 For more video please visit http://video.ias.edu
From playlist Seminar on Geometric and Modular Representation Theory