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Electronic Colloquium on Computational Complexity

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TR22-134 | 23rd September 2022
Greg McLellan, Alexey Milovanov

Some Games on Turing Machines and Power from Random Strings

Revisions: 1

Denote by $R$ the set of strings with high Kolmogorov complexity. In [E. Allender, H. Buhrman, M. Kouck\'y, D. van Melkebeek, and D. Ronneburger.
Power from random strings.
\emph{SIAM Journal on Computing}, 35:1467--1493, 2006.] the idea of using $R$ as an oracle for resource-bounded computation models was presented. This idea ... more >>>


TR22-133 | 20th September 2022
Prahladh Harsha, Daniel Mitropolsky, Alon Rosen

Downward Self-Reducibility in TFNP

Revisions: 1 , Comments: 1

A problem is downward self-reducible if it can be solved efficiently given an oracle that returns
solutions for strictly smaller instances. In the decisional landscape, downward self-reducibility is
well studied and it is known that all downward self-reducible problems are in PSPACE. In this
paper, we initiate the study of ... more >>>


TR22-132 | 18th September 2022
Harm Derksen, Emanuele Viola

Fooling polynomials using invariant theory

We revisit the problem of constructing explicit pseudorandom generators
that fool with error $\epsilon$ degree-$d$ polynomials in $n$ variables
over the field $F_q$, in the case of large $q$. Previous constructions
either have seed length at least $2^{d}\log q$, and thus are only non-trivial
when the degree is less than ... more >>>



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