Research
Research
Below, you’ll find my publications, CV, and slides/notes from recent talks and learning experiences. I’m always happy to discuss my work or answer questions—please reach out to me at prerna.dhankhar@uky.edu.
I am a student of Professor Bert Guillou.
Curriculum Vitae
Click here for a copy of my CV.
Publications
(Preprint) Very effective algebraic and hermitian K-theory of the cyclic group of order two.
Prerna Dhankhar, Rebecca Field, Arjun Nigam, J.D. Quigley, and Albert Jinghui Yang.
arXiv:2509.25006 [math.KT], 2025. (35 pp., 37 figs.) https://arxiv.org/abs/2509.25006
Upcoming Talks
Abstract-TBD
A special session on “Computational Homotopy Theory”
At the AMS Sectional Meeting at Arizona State University – November 7-8, 2026
Abstract-TBD
AMS Special Session on Recent Developments in Algebraic Topology"
At the Joint Mathematics Meetings (JMM) 2027 in Chicago – January 13, 2027
Abstract-TBD
AWM Special Session on Recent Developments in Algebraic Topology"
At the Joint Mathematics Meetings (JMM) 2027 in Chicago – January 15, 2027
Recent Talks
Computing the RO(C_2)- graded homotopy groups of an equivariant spectrum ko_{C_2}
UK Topology Seminar – March 5th, 2026
In this talk I computed the RO(C_2)-graded homotopy groups of the C_2- equivariant connective cover of real K-theory, ko_{C_2}. The main computational tool is the C_2-equivariant Adams spectral sequence, whose input is the cohomology of the subalgebra A(1)^[C_2} of the equivariant Steenrod algebra A^[C_2}. A surprising feature of this story is that the C_2-equivariant cohomology of a point looks very similar to the cohomology of Spec(R) in real motivic homotopy theory. This resemblance both motivates the use of ρ-Bockstein Spectral Sequence and helps organize the Adams spectral sequence in a useful way. Although the details of the calculation can get quite intricate, beyond the bookkeeping there are some genuinely nice patterns and pictures that emerge, and I tried to emphasize those.
Computing real K-theory homology of Classifying space BC_2^n, for n>1
UK Topology Seminar – November 6th, 2025
In this talk, I computed the connective real K-theory homology of the classifying spaces of cyclic 2-groups. Classifying spaces of finite groups serve as fundamental test cases for understanding how the generalized homology theories behave, and these computations illuminate how ko-theory detects 2-torsion phenomena. Using spectral sequences, I described the process of carrying out the computation and explained the resulting structure of ko*(BC_2^n). I also discussed how analogous methods can be applied in the motivic setting to compute kq*(BC_2^n), the very effective cover of Hermitian K theory over C and R.
Computing Effective Algebraic K-theory of Classifying space BC_2.
Summer Collaborative Workshop, Virginia – June 21st, 2025
In this short collaborative talk, I presented the calculation of kgl_{**}(BC_2) using the Adams spectral sequence, leveraging the E(1)-module structure of the motivic cohomology of BC_2. My work involved solving hidden extensions in the Atiyah–Hirzebruch spectral sequence, highlighting computational techniques in motivic homotopy theory.
When is S^n an H-space?
UK Topology Seminar – November 21st, 2024
This talk investigated the results of complex vector bundles and K-theory, specifically to prove that S^n is an H-space only for n = 0,1,3, and 7. This result addresses a significant algebraic question (R^n is a division algebra or TS^n is trivial bundle) and highlights the connections between topology and algebraic structures. I introduced equivalence classes of vector bundles as commutative rings and discuss their properties in relation to K(S^n). Ultimately, this exploration sheds light on the role of K-theory in algebraic topology and their topological implications.
Upcoming Conferences and Meetings
At SL Math in Berkeley – October 19-23, 2026
At the AMS Sectional Meeting at Arizona State University – November 7-8, 2026
At the Joint Mathematics Meetings (JMM) in Chicago – January 12-15, 2027
Conference Attended
At the Institute for Computational and Experimental Research in Mathematics (ICERM), Brown University – June 22–26, 2026
At the School of Mathematics, University of Minnesota – October 24–26, 2025
At the Mathematics Department, University of Virginia – March 22–23, 2025
At the Department of Mathematics, Indiana University Bloomington – April 11–13, 2025
At the Department of Mathematics, Michigan State University, East Lansing, Michigan – April 12–14, 2024
At the Department of Mathematics, University of Chicago – November 2–3, 2024
At the Department of Mathematics, Loyola University Chicago – March 16–17, 2024
Important Books and Notes
TBD