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D´ ECALAGE AND KAN’S SIMPLICIAL LOOP GROUP FUNCTOR DANNY STEVENSON
D´ ECALAGE AND KAN’S SIMPLICIAL LOOP GROUP FUNCTOR DANNY STEVENSON

... DÉCALAGE AND KAN’S SIMPLICIAL LOOP GROUP FUNCTOR ...
Geometry Conjectures
Geometry Conjectures

... the formula _________________________ where A is the area, a is the apothem, s is the length of each side, and n is the number of sides of the regular polygon. Since the length of each side times the number of sides is the perimeter (sn = p). The formula can also be written as A – (1/2)a___ ...
Notes
Notes

... the µi are conjugacy classes of cocharacters of G (over an algebraic closure). These live over a product of m copies of the curve. In the number field context, we have Shimura varieties associated with data (G, µ), where G is a reductive group and µ is a conjugacy class of minuscule cocharacters. Th ...
The Theory of Polynomial Functors
The Theory of Polynomial Functors

The Simplicial Lusternik
The Simplicial Lusternik

... K & L. The definition of the simplicial category given in [1] is based on the definition of geometric category given by Fox [7] and represents the minimum, among the simplicial complexes L such that K & L, of the smallest number of collapsible subcomplexes that can cover L. However, the concept of c ...
Constellations and their relationship with categories
Constellations and their relationship with categories

... One can also obtain a constellation structure analogous to approach (3), in which composition of structure-preserving maps is defined whenever the image of the first mapping is contained in the domain of the second. (On the other hand, approach (2) is difficult to make sense of in general, and may o ...
Line Pair Conjecture If two angles form a linear pair, then the
Line Pair Conjecture If two angles form a linear pair, then the

... Line Pair Conjecture If two angles form a linear pair, then the measures of the angles add up to 180° Vertical Angles Conjecture If two angles are vertical angles, then they are congruent. (Opposite angles) Corresponding Angles Conjecture If two parallel lines are cut by a transversal, then correspo ...
SYNTHETIC PROJECTIVE GEOMETRY
SYNTHETIC PROJECTIVE GEOMETRY

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Families of ordinary abelian varieties

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Chapter IV. Quotients by group schemes. When we work with group

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Abelian Varieties

... case g D 2 is something of an exception to this statement. Every abelian variety of dimension 2 is the Jacobian variety of a curve of genus 2, and every curve of genus 2 has an equation of the form Y 2 Z 4 D f0 X 6 C f1 X 5 Z C    C f6 Z 6 : Flynn (1990) has found the equations of the Jacobian va ...
Sans titre
Sans titre

... (6) Assume now, as in Lemma 9.2.2, that X = H ⇥ t and set g(x, t) = t. Conclude from Exercise 7.3.37(4) that the following conditions are equivalent: (7) mb(t@t ) 2 mV 1 (DX ) (V -filtration with respect to t), (8) mts b(s) 2 mts+1 DX [s]. Proof of Proposition 9.2.1. (1) Let M be a coherent DX -modu ...
Conjectures
Conjectures

Geometry Topic alignment - Trumbull County Educational Service
Geometry Topic alignment - Trumbull County Educational Service

... rectangles, rhombuses, squares and kites, using compass and straightedge or dynamic geometry software. Analyze two-dimensional figures in a coordinate plane; e.g., use slope and distance formulas to show that a quadrilateral is a parallelogram. Represent and analyze shapes using coordinate geometry; ...
Derived algebraic geometry
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... Pn , of complementary dimension and having a zero-dimensional intersection. In this case, the appropriate intersection number associated to a point p ∈ C ∩ C 0 is not always given by the complex dimension of the local ring OC∩C 0 ,p = OC,p ⊗OPn ,p OC 0 ,p . The reason for this is easy to understand ...
Constructible Sheaves, Stalks, and Cohomology
Constructible Sheaves, Stalks, and Cohomology

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... Seminar on triples and categorical homology theory, LNCS 80:141–155, 1966 ...
Chapter 4 Conjecture Packet
Chapter 4 Conjecture Packet

A Concise Course in Algebraic Topology JP May
A Concise Course in Algebraic Topology JP May

... one which is largely unknown to most other mathematicians, even those working in such closely related fields as geometric topology and algebraic geometry. Moreover, this development is poorly reflected in the textbooks that have appeared over this period. Let me give a small but technically importan ...
A Concise Course in Algebraic Topology J. P. May
A Concise Course in Algebraic Topology J. P. May

... one which is largely unknown to most other mathematicians, even those working in such closely related fields as geometric topology and algebraic geometry. Moreover, this development is poorly reflected in the textbooks that have appeared over this period. Let me give a small but technically importan ...
arXiv:1510.01797v3 [math.CT] 21 Apr 2016 - Mathematik, Uni
arXiv:1510.01797v3 [math.CT] 21 Apr 2016 - Mathematik, Uni

course notes
course notes

... In this first chapter, our main goal will be to motivate why one would like to study the objects that this course is about, namely Galois representations and automorphic forms. We give two examples that will later turn out to be known special cases of the Langlands correspondence, namely Gauss’s qua ...
Aspects of topoi
Aspects of topoi

... Mac Lane-notion of "universal element". For cartesian-closedness (forgive, oh Muse, but "closure" is just not right) we obtain the following: ...
The bounded derived category of an algebra with radical squared zero
The bounded derived category of an algebra with radical squared zero

A primer on homotopy colimits
A primer on homotopy colimits

< 1 2 3 4 5 6 ... 19 >

Motive (algebraic geometry)

In algebraic geometry, a motive (or sometimes motif, following French usage) denotes 'some essential part of an algebraic variety'. To date, pure motives have been defined, while conjectural mixed motives have not. Pure motives are triples (X, p, m), where X is a smooth projective variety, p : X ⊢ X is an idempotent correspondence, and m an integer. A morphism from (X, p, m) to (Y, q, n) is given by a correspondence of degree n – m.As far as mixed motives, following Alexander Grothendieck, mathematicians are working to find a suitable definition which will then provide a ""universal"" cohomology theory. In terms of category theory, it was intended to have a definition via splitting idempotents in a category of algebraic correspondences. The way ahead for that definition has been blocked for some decades by the failure to prove the standard conjectures on algebraic cycles. This prevents the category from having 'enough' morphisms, as can currently be shown. While the category of motives was supposed to be the universal Weil cohomology much discussed in the years 1960-1970, that hope for it remains unfulfilled. On the other hand, by a quite different route, motivic cohomology now has a technically adequate definition.
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