Dawid Pasternyhttps://dawidpasterny.com/Machine-learning surrogates for physics simulationsBarnes–Hut algorithmhttps://dawidpasterny.com/wiki/Barnes-Hut_algorithmhttps://dawidpasterny.com/wiki/Barnes-Hut_algorithmThu, 12 Nov 2026 00:00:00 +0000How a quadtree turns the O(N²) n-body sum into O(N log N), with a live galaxy collision.Fast multipole methodhttps://dawidpasterny.com/wiki/Fast_multipole_methodhttps://dawidpasterny.com/wiki/Fast_multipole_methodThu, 12 Nov 2026 00:00:00 +0000Barnes–Hut's successor: multipole and local expansions bring the n-body sum down to O(N).Bravais latticeshttps://dawidpasterny.com/wiki/Bravais_latticeshttps://dawidpasterny.com/wiki/Bravais_latticesThu, 12 Nov 2026 00:00:00 +0000The fourteen ways to repeat a point in space, and why metals pick only three of them.Dislocation theoryhttps://dawidpasterny.com/wiki/Dislocation_theoryhttps://dawidpasterny.com/wiki/Dislocation_theoryThu, 12 Nov 2026 00:00:00 +0000Why metals bend instead of shattering: the line defects that carry plastic flow.Crystal plasticityhttps://dawidpasterny.com/wiki/Crystal_plasticityhttps://dawidpasterny.com/wiki/Crystal_plasticityThu, 12 Nov 2026 00:00:00 +0000From slip on one plane to the stress–strain curve of a polycrystal.Memexhttps://dawidpasterny.com/wiki/Memexhttps://dawidpasterny.com/wiki/MemexThu, 12 Nov 2026 00:00:00 +0000Vannevar Bush's 1945 machine for associative memory, and the vault behind this site.As our circle of knowledge expands, so does the circumference of darkness surrounding it.https://dawidpasterny.com/pensieve/As_our_circle_of_knowledge_expandshttps://dawidpasterny.com/pensieve/As_our_circle_of_knowledge_expandsThu, 12 Nov 2026 00:00:00 +0000"As our circle of knowledge expands, so does the circumference of darkness surrounding it." Albert Einstein LinksTheories are works of art, symphonies of thoughthttps://dawidpasterny.com/pensieve/Theories_are_works_of_art_symphonies_of_thoughthttps://dawidpasterny.com/pensieve/Theories_are_works_of_art_symphonies_of_thoughtThu, 12 Nov 2026 00:00:00 +0000Theories are works of art and they should be presented as such.Asking questions matters more than answeringhttps://dawidpasterny.com/pensieve/Asking_questions_matters_more_than_answeringhttps://dawidpasterny.com/pensieve/Asking_questions_matters_more_than_answeringThu, 12 Nov 2026 00:00:00 +0000Finding the questions to ask is way more important and fun than actually anwearing them.