Search for tag: "geometry"

64 Media

Feb 17: Straight-line Planar Maps duration 1 hour 14 minutes Feb 17: Straight-line Planar Maps Feb 17: Straight-line Planar Maps	Feb 17: Straight-line Planar Maps Straight-line planar embedding, star-shaped-hole… computational geometry From Jeff Erickson 15 plays 0 Date of creation 2/17/2023 6:00 AM
Toby Stafford, Invariant holonomic systems for… duration 56 minutes 26 seconds Toby Stafford, Invariant holonomic systems for… Toby Stafford, Invariant holonomic systems for symmetric spaces	Toby Stafford, Invariant holonomic systems for symmetric spaces Toby Stafford (University of Manchester) presents… equivariant eigendistributions +3 More From Shelby Koehne 10 plays 0 Date of creation 6/12/2022 5:00 AM Video credits Jennifer Nygard
Travis Schedler, D-modules and rings of… duration 1 hour 0 minutes Travis Schedler, D-modules and rings of… Travis Schedler, D-modules and rings of differential operators in singular and noncommutative settings	Travis Schedler, D-modules and rings of differential operators in singular and noncommutative settings Travis Schedler (Imperial College London)… d-modules +3 More From Shelby Koehne 31 plays 0 Date of creation 6/12/2022 5:00 AM Video credits Jennifer Nygard
Susan Sierra, Blowing down noncommutative cubic… duration 1 hour 7 minutes Susan Sierra, Blowing down noncommutative cubic… Susan Sierra, Blowing down noncommutative cubic surfaces	Susan Sierra, Blowing down noncommutative cubic surfaces Susan Sierra (University of Edinburgh) presents… cubic surfaces +3 More From Shelby Koehne 21 plays 0 Date of creation 6/11/2022 5:00 AM Video credits Jennifer Nygard
Gwyn Bellamy, Birational geometry of quiver… duration 59 minutes 23 seconds Gwyn Bellamy, Birational geometry of quiver… Gwyn Bellamy, Birational geometry of quiver varieties	Gwyn Bellamy, Birational geometry of quiver varieties Gwyn Bellamy (University of Glasgow) presents at… birational geometry +4 More From Shelby Koehne 26 plays 0 Date of creation 6/11/2022 5:00 AM Video credits Jennifer Nygard
Apr 22: Visibility graphs duration 1 hour 13 minutes Apr 22: Visibility graphs Apr 22: Visibility graphs	Apr 22: Visibility graphs Visibility graph definitions Complexity:… computational geometry From Jeff Erickson 81 plays 0 Date of creation 4/22/2022 5:00 AM
Apr 20: Fréchet distance continued duration 1 hour 18 minutes Apr 20: Fréchet distance continued Apr 20: Fréchet distance continued	Apr 20: Fréchet distance continued Decision problem: Free space is convex in each… computational geometry From Jeff Erickson 47 plays 0
Apr 15: Convolutions and Fréchet distance duration 1 hour 15 minutes Apr 15: Convolutions and Fréchet distance Apr 15: Convolutions and Fréchet distance	Apr 15: Convolutions and Fréchet distance Convolution A*B definition Minkowski sum A+B =… computational geometry From Jeff Erickson 40 plays 0 Date of creation 4/15/2022 5:00 AM
Apr 13: Minkowski sums and motion planning duration 1 hour 13 minutes Apr 13: Minkowski sums and motion planning Apr 13: Minkowski sums and motion planning	Apr 13: Minkowski sums and motion planning The translational motion planning problem Work… computational geometry From Jeff Erickson 54 plays 0 Date of creation 4/13/2022 5:00 AM
Apr 8: Geometric shortest paths duration 1 hour 11 minutes Apr 8: Geometric shortest paths Apr 8: Geometric shortest paths	Apr 8: Geometric shortest paths Definitions: Shortest paths in polygons… computational geometry From Jeff Erickson 42 plays 0 Date of creation 4/8/2022 5:00 AM
Apr 6: Applications of line arrangements duration 1 hour 19 minutes Apr 6: Applications of line arrangements Apr 6: Applications of line arrangements	Apr 6: Applications of line arrangements Halfplane discrepancy Ham sandwich cuts… computational geometry From Jeff Erickson 41 plays 0 Date of creation 4/6/2022 5:00 AM
Apr 1: Line arrangements duration 1 hour 14 minutes Apr 1: Line arrangements Apr 1: Line arrangements	Apr 1: Line arrangements Definitions Motivation Incremental algorithm: For… computational geometry From Jeff Erickson 47 plays 0 Date of creation 4/1/2022 5:00 AM
Mar 30: Generalizations of linear programming duration 1 hour 16 minutes Mar 30: Generalizations of linear programming Mar 30: Generalizations of linear programming	Mar 30: Generalizations of linear programming Smallest enclosing annulus: reduce to LP by… computational geometry From Jeff Erickson 43 plays 0 Date of creation 3/30/2022 5:00 AM
Mar 25: Seidel's linear programming algorithm duration 1 hour 16 minutes Mar 25: Seidel's linear programming algorithm Mar 25: Seidel's linear programming algorithm	Mar 25: Seidel's linear programming algorithm Set up and assumptions Seidel's incremental… computational geometry From Jeff Erickson 135 plays 0 Date of creation 3/25/2022 5:00 AM
Mar 23: Linear programming intro duration 1 hour 13 minutes Mar 23: Linear programming intro Mar 23: Linear programming intro	Mar 23: Linear programming intro Example 1: Max-margin classifier Example 2:… computational geometry From Jeff Erickson 64 plays 0 Date of creation 3/23/2022 5:00 AM
Mar 09: Generalizations of Voronoi diagrams duration 58 minutes 18 seconds Mar 09: Generalizations of Voronoi diagrams Mar 09: Generalizations of Voronoi diagrams	Mar 09: Generalizations of Voronoi diagrams four-way equivalence, via duality and lifting:… computational geometry From Jeff Erickson 43 plays 0 Date of creation 3/9/2022 6:00 AM
Mar 04: Randomized incremental Delaunay… duration 1 hour 13 minutes Mar 04: Randomized incremental Delaunay… Mar 04: Randomized incremental Delaunay triangulations	Mar 04: Randomized incremental Delaunay triangulations Randomized incremental algorithm outline Adding a… computational geometry From Jeff Erickson 60 plays 0 Date of creation 3/4/2022 6:00 AM
Mar 02: Delaunay triangulation proofs duration 1 hour 14 minutes Mar 02: Delaunay triangulation proofs Mar 02: Delaunay triangulation proofs	Mar 02: Delaunay triangulation proofs local Delaunay condition and Lawson's flip… computational geometry From Jeff Erickson 59 plays 0 Date of creation 3/2/2022 6:00 AM
Feb 25: Voronoi diagrams and Delaunay… duration 1 hour 15 minutes Feb 25: Voronoi diagrams and Delaunay… Feb 25: Voronoi diagrams and Delaunay triangulations	Feb 25: Voronoi diagrams and Delaunay triangulations Voronoi diagram definition Simple examples (2 or… computational geometry From Jeff Erickson 102 plays 0 Date of creation 2/25/2022 6:00 AM
Feb 23: Faster polygon triangulation duration 1 hour 13 minutes Feb 23: Faster polygon triangulation Feb 23: Faster polygon triangulation	Feb 23: Faster polygon triangulation Intuition: Tracing the polygon can be faster than… computational geometry From Jeff Erickson 38 plays 0
Feb 18: Randomized Incremental Construction II duration 1 hour 17 minutes Feb 18: Randomized Incremental Construction II Feb 18: Randomized Incremental Construction II	Feb 18: Randomized Incremental Construction II Review of insertion algorithm: expected time =… computational geometry From Jeff Erickson 32 plays 0
Feb 16: Duality, Randomized Incremental… duration 1 hour 15 minutes Feb 16: Duality, Randomized Incremental… Feb 16: Duality, Randomized Incremental Construction	Feb 16: Duality, Randomized Incremental Construction Duality in more detail: head=left, tail=right,… computational geometry From Jeff Erickson 43 plays 0 Date of creation 2/16/2022 6:00 AM
Feb 09: Elementary polygon algorithms duration 1 hour 12 minutes Feb 09: Elementary polygon algorithms Feb 09: Elementary polygon algorithms	Feb 09: Elementary polygon algorithms Gauss's point-in-polygon test Winding… computational geometry From Jeff Erickson 65 plays 0 Video credits Jeff Erickson Contributors and team members Jeff Erickson
Feb 11: Planar straight-line graphs duration 1 hour 11 minutes Feb 11: Planar straight-line graphs Feb 11: Planar straight-line graphs	Feb 11: Planar straight-line graphs Incidence lists for abstract (multi-)graphs… computational geometry From Jeff Erickson 52 plays 0 Date of creation 2/11/2022 6:00 AM

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