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- Egor Ianovski, Russell G. Miller, Keng Meng Ng, André Nies
- J. Symb. Log.
- 2014

We study the relative complexity of equivalence relations and preorders from computability theory and complexity theory. Given binary relations R, S, a componentwise reducibility is defined by R ≤ S ⇐⇒ ∃f ∀x, y [xRy ↔ f (x)Sf (y)]. Here f is taken from a suitable class of effective functions. For us the relations will be on natural numbers, and f must be… (More)

- Egor Ianovski, Lan Yu, Edith Elkind, Mark C. Wilson
- IJCAI
- 2011

[Slinko and White, 2008] have recently introduced a new model of coalitional manipulation of voting rules under limited communication, which they call safe strategic voting. The computational aspects of this model were first studied by [Hazon and Elkind, 2010], who provide polynomial-time algorithms for finding a safe strategic vote under k-approval and the… (More)

- Egor Ianovski
- ArXiv
- 2013

- Egor Ianovski
- ArXiv
- 2012

- Alwen Tiu, Egor Ianovski, Rajeev Goré
- Advances in Modal Logic
- 2012

A grammar logic refers to an extension to the multi-modal logic K in which the modal axioms are generated from a formal grammar. We consider a proof theory, in nested sequent calculus, of grammar logics with converse, i.e., every modal operator [a] comes with a converse [a] −1. Extending previous works on nested sequent systems for tense logics, we show all… (More)

- Egor Ianovski, C.-H. Luke Ong
- KR
- 2014

Boolean games are an expressive and natural formalism through which to investigate problems of strategic interaction in multiagent systems. Although they have been widely studied, almost all previous work on Nash equilibria in Boolean games has focused on the restricted setting of pure strategies. This is a shortcoming as finite games are guaranteed to have… (More)

- Egor Ianovski, Luke Ong
- 2014

Boolean games are an expressive and natural formalism through which to investigate problems of strategic interaction in multiagent systems. Although they have been widely studied , almost all previous work on Nash equilibria in Boolean games has focused on the restricted setting of pure strategies. This is a shortcoming as finite games are guaranteed to… (More)

- Egor Ianovski
- ArXiv
- 2017

A B S T R A C T Boolean games are a succinct representation of strategic games wherein a player seeks to satisfy a formula of propositional logic by selecting a truth assignment to a set of propositional variables under his control. The difficulty arises because a player does not necessarily control every variable on which his formula depends, hence the… (More)

- Egor Ianovski
- ArXiv
- 2016

The Duggan-Schwartz theorem [Duggan and Schwartz, 1992] is a famous result concerning strategy-proof social choice correspondences, often stated as " A social choice correspondence that can be manipulated by neither an optimist nor a pessimist has a weak dictator ". However, this formulation is actually due to Taylor [2002], and the original theorem, at… (More)

- Egor Ianovski
- ArXiv
- 2014

Buchi's theorem, in establishing the equivalence between languages definable in S1S over element and<and the omega-regular languages also demonstrated that S1S over element and<is no more expressive than its existential fragment. It is also easy to see that S1S over element and<is equi-expressive with S1S over element and successor. However, it is not… (More)