Note on Cup-products
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چکیده
منابع مشابه
Massey Product and Its Applications
This is the note for my talk in Graduate Student Seminar NEU. W. Massey defined Massey product as a higher order cohomology operation, which is a generalization of cup product. A first application of Massey product is in Knot theory showing that Borromean rings are linked with zero linking numbers. As another application, people can use Massey product describe the differentials in spectral sequ...
متن کاملCup Products on Polyhedral Approximations of 3D Digital Images
Let I be a 3D digital image, and let Q(I) be the associated cubical complex. In this paper we show how to simplify the combinatorial structure of Q(I) and obtain a homeomorphic cellular complex P (I) with fewer cells. We introduce formulas for a diagonal approximation on a general polygon and use it to compute cup products on the cohomology H∗(P (I)). The cup product encodes important geometric...
متن کاملSelf cup products and the theta characteristic torsor
We give a general formula relating self cup products in cohomology to connecting maps in nonabelian cohomology, and apply it to obtain a formula for the self cup product associated to the Weil pairing.
متن کاملEffect of Inspection Policies and Residual Value of Collected Used Products: A Mathematical Model and Genetic Algorithm for a Closed-Loop Green Manufacturing System
In the green manufacturing system that pursues the reuse of used products, the residual value of collected used products (CUP) hugely affects a variety of managerial decisions to construct profitable and environmental remanufacturing plans. This paper deals with a closed-loop green manufacturing system for companies which perform both manufacturing with raw materials and remanufacturing with co...
متن کاملFLOW (finding lasting options for women): multicentre randomized controlled trial comparing tampons with menstrual cups.
OBJECTIVE To determine whether menstrual cups are a viable alternative to tampons. DESIGN Randomized controlled trial. SETTING Prince George, Victoria, and Vancouver, BC. PARTICIPANTS A total of 110 women aged 19 to 40 years who had previously used tampons as their main method of menstrual management. INTERVENTION Participants were randomized into 2 groups, a tampon group and a menstrua...
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تاریخ انتشار 2010