منابع مشابه
Homotopically Non-trivial Maps with Small K-dilation
We construct homotopically non-trivial maps from Sm to Sn with arbitrarily small 3-dilation for certain pairs (m,n). The simplest example is the case m = 4, n = 3, and there are other pairs with arbitrarily large values of both m and n. We show that a homotopy class in π7(S) can be represented by maps with arbitrarily small 4-dilation if and only if the class is torsion. The k-dilation of a map...
متن کاملHomotopically Periodic Maps of Model Aspherical Manifolds
For a closed orientable surface S, any map f : S→S whose n-th power is homotopic to the identity, is homotopic to a homeomorphism g of S of order n. This famous theorem of Nielsen is known to fail in general for aspherical manifolds. In this paper, for model aspherical manifolds M associated to a finitely extendable set of data, we, however, present a weaker version of Nielsen’s result. We show...
متن کاملHow Trivial Is Trivial
This question is, I feel, in the same kind of idiot category as how long is a piece of string? interviewed recently by a journalist planning to write an article about the women (like me) who conduct 'Auntie' columns in women's magazines, I was asked what proportion of the letters I received each week could be labelled trivial. Her eyebrows shot up when I said that in my view, no human problem w...
متن کاملIs Trivial Dynamics That Trivial?
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. Mathematical Association of America is collaborating with ...
متن کاملJordan derivation on trivial extension
Let A be a unital R-algebra and M be a unital A-bimodule. It is shown that every Jordan derivation of the trivial extension of A by M, under some conditions, is the sum of a derivation and an antiderivation.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Singularities
سال: 2012
ISSN: 1949-2006
DOI: 10.5427/jsing.2012.5f