NSF award 2609113 · Washington University

Instantons, Knots and Surgery

Final report due

29 December 2029

in 1,168 days · The award ends on 31 August 2029.

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Decide about an extension3 May 2029in 928 days
award ending 2029-08-31 · Research.gov
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Extension request17 Jul 2029in 1003 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice21 Aug 2029in 1038 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 31 August 2029.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 29 December 2029.

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Award card

Award number: 2609113
Period of support: 1 Sep 2026 – 31 Aug 2029
Amount: $243,100
Awardee: Washington University, Saint Louis, MO
Program: TOPOLOGY
Directorate: MPS

Abstract

Understanding the shape of spaces is a central goal of topology, a field of mathematics that studies geometric objects up to continuous deformation. Low-dimensional topology focuses on spaces of dimension three and four, where ideas from geometry, analysis, algebra, and mathematical physics interact in powerful ways to study how such spaces can be recognized, distinguished, and built; despite major successes of…

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