algebraic geometry, given a Deligne–Mumford stack X, a perfect obstruction theory for X consists of: a perfect two-term complex E = [ E − 1 → E 0 ] {\displaystyle...

{\text{Ext}}^{1}({\mathcal {E}},{\mathcal {E}})^{\vee }} which gives a perfect obstruction theory of dimension 0. In particular, this implies the associated virtual...

determined by the perfect obstruction theory and s0! is the refined Gysin homomorphism defined just as in Fulton's "Intersection theory". The same paper...

Leth's The Perfect Human, and von Trier gives Leth the task of remaking The Perfect Human five times, each time with a different "obstruction" (or obstacle)...

made important contributions in the theory of algebraic stacks, Gromov–Witten invariants and Donaldson–Thomas theory (cf. Behrend function.) He is also...

Deligne-Mumford stacks using the intrinsic normal cone and a perfect obstruction theory, but the first definitions are more amenable for constructing...

finite obstruction set. Erdős–Hajnal conjecture Forbidden subgraph problem Matroid minor Zarankiewicz problem Diestel, Reinhard (2000), Graph Theory, Graduate...

Algebraic number theory is a branch of number theory that uses the techniques of abstract algebra to study the integers, rational numbers, and their generalizations...

In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert...

reflections. Near-line-of-sight (also NLOS) conditions refer to partial obstruction by a physical object present in the innermost Fresnel zone. Obstacles...

pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or free space, and use...

supporting hyperplanes.[P89] As such, his construction provided further obstruction to the extension of a well-known theorem of Nikolai Efimov to higher...

pp. 145–162. Golumbic, Martin Charles (1980), Algorithmic Graph Theory and Perfect Graphs, New York: Academic Press. 2nd edition, Annals of Discrete...

to a naive application of the inverse Wick transformation. The theory has an obstruction that does not allow for the simple replacement of p 4 = ± i ω...

1007/s004530010025, S2CID 9690525. Berge, Claude (1967), "Some classes of perfect graphs", Graph Theory and Theoretical Physics, New York: Academic Press, pp. 155–165...

adopted two articles of impeachment against Trump: abuse of power and obstruction of Congress. On February 5, 2020, the Senate voted to acquit Trump on...

if every vertex order of the graph is a perfect order, since having no P4 means that no obstruction to a perfect order will exist in any vertex order. A...

of impeachment. Trump was impeached on charges of abuse of power and obstruction of Congress, but was acquitted by the Senate. On December 3, 2019, as...

associates and their connection to Russian officials and espionage Possible obstruction of justice by Trump and his associates While the investigation found...

Yong-Geun Oh, Hiroshi Ohta (2009). Lagrangian Intersection Floer Theory Anomaly and Obstruction [page needed] Vladimir Arnold at the Mathematics Genealogy Project...

this path have completely freed themselves of all obstructions and afflictions and are thus perfected or fulfilled (niṣṭhā). According to the MS, one has...

near-perfect record in Jan. 6 cases. But it's starting to stumble". Politico. Retrieved January 30, 2024. "Supreme Court appears divided over obstruction law...

Philadelphia. We the People of the United States, in order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the...

system of testing athletes for mineral deficiencies in order to maintain a perfect balance of minerals in the body. Through regular urine and blood testing...

after a night of heavy drinking. She was charged with assault and obstruction of breathing or blood circulation. "'OITNB' Star Taryn Manning Arrested...

F*/(F*)2, which can be identified with H1(F, F2) by Kummer theory. If the field K is perfect, then every nonsingular quadratic form over K is uniquely...

Airy pattern are descriptions of the best-focused spot of light that a perfect lens with a circular aperture can make, limited by the diffraction of light...

the introduction. In 2011, Wheelen and Hunger gave the definition "an obstruction that makes it difficult for a company to enter an industry". A primary...

sections on theory of flight are understandable with a passing knowledge of calculus and physics. Craig, Paul P. (1957). "Observation of Perfect Potential...

but made important contributions to number theory. He was the founder of modular representation theory. Alfred Brauer was Richard's brother and seven...