Zobrazeno 1 - 10
of 482
pro vyhledávání: '"Das, Sumanta"'
Autor:
Das, Sumanta, Gadgil, Siddhartha
Publikováno v:
Comptes Rendus. Mathématique, Vol 361, Iss G8, Pp 1349-1356 (2023)
We show that finite-type surfaces are characterized by a topological analogue of the Hopf property. Namely, an oriented surface $\Sigma $ is of finite-type if and only if every proper map $f\colon \,\Sigma \rightarrow \Sigma $ of degree one is homoto
Externí odkaz:
https://doaj.org/article/d84e747060b9466a8b1845e88d54dfab
Autor:
Das, Sumanta
We show that almost all $\pi_1$-injective proper maps between two non-compact surfaces, where surfaces are possibly of infinite type, can be properly homotoped to finite-sheeted covering maps.
Comment: 19 Pages, 1 figure. Comments welcome!
Comment: 19 Pages, 1 figure. Comments welcome!
Externí odkaz:
http://arxiv.org/abs/2405.09824
We show that a homotopy equivalence between two non-compact orientable surfaces is homotopic to a homeomorphism if and only if it preserves the Goldman bracket, provided our surfaces are neither the plane nor the punctured plane.
Comment: to app
Comment: to app
Externí odkaz:
http://arxiv.org/abs/2307.02769
Autor:
Das, Sumanta, Gadgil, Siddhartha
We show that finite-type surfaces are characterized by a topological analog of the Hopf property. Namely, an oriented surface $\Sigma$ is of finite-type if and only if every proper map $f\colon\Sigma\to \Sigma$ of degree one is homotopic to a homeomo
Externí odkaz:
http://arxiv.org/abs/2210.03395
Autor:
Dandapath, Iman, Das, Sumanta, Charan, Bheru Dan, Garg, Ajay, Suri, Ashish, Kedia, Shweta, Sharma, Mehar Chand, Sarkar, Chitra, Khonglah, Yookarin, Ahmed, Shabnam, Suri, Vaishali
Publikováno v:
In Annals of Diagnostic Pathology October 2024 72
Autor:
Das, Sumanta
We show that every orientable infinite-type surface is properly rigid as a consequence of a more general result. Namely, we prove that if a homotopy equivalence between any two non-compact orientable surfaces is a proper map, then it is properly homo
Externí odkaz:
http://arxiv.org/abs/2111.11194
Autor:
Das, Sumanta1,2 sumanta.das@uq.net.au, Choudhury, Malini Roy2, Chatterjee, Bhagyasree1, Das, Pinanki1, Bagri, Sandeep3, Paul, Debashis3, Bera, Mahadev1, Dutta, Suman4
Publikováno v:
AIMS Public Health. 2024, Vol. 11 Issue 3, p963-1001. 39p.
Autor:
Oladipo, Bolaji, Doner, Sami, Lyngdoh, Gideon A., Villada, Jonathan T., Wanchoo, Piyush, Matos, Helio, Shukla, Arun, Das, Sumanta
Publikováno v:
In Materials Today Communications December 2024 41
Autor:
Das, Sumanta, Gupta, Divya, Dan Charan, Bheru, Sahu, Saumya, Suri, Vaishali, Garg, Ajay, Tandon, Vivek, Suri, Ashish, Sharma, Mehar Chand
Publikováno v:
In Pathology - Research and Practice November 2024 263
Publikováno v:
In Pathology - Research and Practice November 2024 263