词条pullback在英语»西班牙语中的译文

pullback [美 ˈpʊlˌbæk, 英 ˈpʊlbak] 名词

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1. pullback (of troops):

pullback

2. pullback (reduction):

a pullback in prices/demand

una reducción en los precios/la demanda

到英语_美式英语

单语范例（未经PONS编辑处理）

英语

The 1-forms and are defined to be the pullbacks of the other two. en.wikipedia.org

The pullback of differential forms has two properties which make it extremely useful. 1. en.wikipedia.org

Many steps also have single, double, and triple versions, including pullbacks, timesteps, and drawbacks. en.wikipedia.org

Conversely, general bundle maps can be reduced to bundle maps over a fixed base space using the notion of a pullback bundle. en.wikipedia.org

The pullback motor was wound up by pressing down the rear of the car and rolling it forwards and backwards on its wheels. en.wikipedia.org

The construction of the pullback bundle can be carried out in subcategories of the category of topological spaces, such as the category of smooth manifolds. en.wikipedia.org

The pullback of a form can also be written in coordinates. en.wikipedia.org

One can therefore talk about lifting products, equalizers, pullbacks, etc. en.wikipedia.org

Specifically, lower indices are covariant indices, and transform via pullbacks, while upper indices are contravariant, transforming under pushforwards. en.wikipedia.org

Other typical requirements are: any extremal monomorphism is an embedding and embeddings are stable under pullbacks. en.wikipedia.org

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