In mathematics, specifically in group theory, the concept of a semidirect product is a generalization of a direct product. There are two closely related concepts of semidirect product:
Homological algebra is the branch of mathematics that studies homology in a general algebraic setting. It is a relatively young discipline, whose origins can be traced to investigations in combinatorial topology and abstract algebra at the end of the 19th century, chiefly by Henri Poincaré and David Hilbert.
In analytic number theory and related branches of mathematics, a complex-valued arithmetic function is a Dirichlet character of modulus if for all integers and :
This is lists of DC Comics fictional characters.
Stellar dynamics is the branch of astrophysics which describes in a statistical way the collective motions of stars subject to their mutual gravity. The essential difference from celestial mechanics is that the number of body
In homological algebra and algebraic topology, a spectral sequence is a means of computing homology groups by taking successive approximations. Spectral sequences are a generalization of exact sequences, and since their introduction by Jean Leray, they have become important computational tools, particularly in algebraic topology, algebraic geometry and homological algebra.
An Euler diagram is a diagrammatic means of representing sets and their relationships. They are particularly useful for explaining complex hierarchies and overlapping definitions. They are similar to another set diagramming technique, Venn diagrams. Unlike Venn diagrams, which show all possible relations between different sets, the Euler diagram shows only relevant relationships.
Bushwacker is a fictional supervillain appearing in American comic books published by Marvel Comics. The character is usually depicted as an adversary to the superhero, Daredevil, and less frequently to the Punisher and Wolverine.
Bulleteer is a fictional character and DC Comics superheroine, a member of the Seven Soldiers. She debuted in Seven Soldiers: The Bulleteer #1, and was created by Grant Morrison and Yanick Paquette. The character is based in part on the Fawcett Comics character Bulletgirl.
In mathematics, in the field of homological algebra, the Grothendieck spectral sequence, introduced by Alexander Grothendieck in his Tôhoku paper, is a spectral sequence that computes the derived functors of the composition of two functors , from knowledge of the derived functors of and . Many spectral sequences in algebraic geometry are instances of the Grothendieck spectral sequence, for example the Leray spectral sequence.
Hero Hotline is a fictional DC Comics corporate superteam introduced in Action Comics Weekly #637. It was created by Bob Rozakis and Stephen DeStefano.
Firebug is the name of three DC Comics supervillains.
In theoretical physics, the BRST formalism, or BRST quantization denotes a relatively rigorous mathematical approach to quantizing a field theory with a gauge symmetry. Quantization rules in earlier quantum field theory (QFT) frameworks resembled "prescriptions" or "heuristics" more than proofs, especially in non-abelian QFT, where the use of "ghost fields" with superficially bizarre properties is almost unavoidable for technical reasons related to renormalization and anomaly cancellation.
The Mandelbulb is a three-dimensional fractal, constructed for the first time in 1997 by Jules Ruis and in 2009 further developed by Daniel White and Paul Nylander using spherical coordinates.
Stan Lee's World of Heroes is a YouTube-funded channel on YouTube. The channel was created by Stan Lee.
Hotline Miami 2: Wrong Number is a top-down shooter video game co-developed by Dennaton Games and Abstraction Games, and published by Devolver Digital. It takes place before, during and after the events of its predecessor, Hotline Miami, as it focuses on the backstory and aftermath of the previous protagonist, Jacket, slaying parts of the Russian mafia at the behest of anonymous tips left by his answering machine.
"Hotline Bling" is a song recorded by Canadian rapper Drake, which serves as the lead single from his fourth studio album Views (2016). The song is credited as a bonus track on the album. It was made available for digital download on July 31, 2015, through Cash Money, Young Money and Republic.
Stephen DeStefano is an American comics artist, animator and storyboard artist best known as the co-creator of 'Mazing Man and Hero Hotline with writer Bob Rozakis.
In algebraic geometry, a mixed Hodge structure is an algebraic structure containing information about the cohomology of general algebraic varieties. It is a generalization of a Hodge structure, which is used to study smooth projective varieties.