activity
20152024
most citedAlgorithms for orbit closure separation for invariants and semi-invariants of matrices

15 citations · 63 across the 17 of their papers we have counts for

collaborators
Showing 2019Show all

5 papers · 1 filter

cs.CC2019★ 8 cited

Search problems in algebraic complexity, GCT, and hardness of generator for invariant rings

Ankit Garg, Christian Ikenmeyer, Visu Makam +3

We consider the problem of computing succinct encodings of lists of generators for invariant rings for group actions. Mulmuley conjectured that there are always polynomial sized su…

math.RT2019★ 1 cited

Singular tuples of matrices is not a null cone (and, the symmetries of algebraic varieties)

Visu Makam, Avi Wigderson

The following multi-determinantal algebraic variety plays a central role in algebra, algebraic geometry and computational complexity theory: , consisting of all $…

math.RT2019

Invariant theory and wheeled PROPs

Harm Derksen, Visu Makam

We study the category of wheeled PROPs using tools from Invariant Theory. A typical example of a wheeled PROP is the mixed tensor algebra , whe…

cs.CC2019

More barriers for rank methods, via a "numeric to symbolic" transfer

Ankit Garg, Visu Makam, Rafael Oliveira +1

We prove new barrier results in arithmetic complexity theory, showing severe limitations of natural lifting (aka escalation) techniques. For example, we prove that even optimal ran…

math.RT2019

An exponential lower bound for the degrees of invariants of cubic forms and tensor actions

Harm Derksen, Visu Makam

Using the Grosshans Principle, we develop a method for proving lower bounds for the maximal degree of a system of generators of an invariant ring. This method also gives lower boun…