activity
20202026
most citedSparse graphs with bounded induced cycle packing number have logarithmic treewidth

8 citations · 11 across the 16 of their papers we have counts for

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7 papers · 1 filter

cs.DM2026

Reducing CMSO to Unbreakable Graphs Cannot be Computable

Colin Geniet, Roohani Sharma

Lokshtanov, Ramanujan, Saurabh, and Zehavi [ICALP 2018] proved that for any CMSO formula , testing on arbitrary graphs can be reduced to testing it on -unbreakable gr…

cs.DS2026

Moderately beyond clique-width: reduced component max-leaf and related parameters

Édouard Bonnet, Yeonsu Chang, Julien Duron +2

Reduced parameters [BKW, JCTB '26; BKRT, SODA '22] are defined via contraction sequences. Based on this framework, we introduce the reduced component max-leaf, denoted by $\operato…

math.CO2026

Variants of Merge-Width and Applications

Karolina Drabik, Maël Dumas, Colin Geniet +3

Merge-width is a recently introduced family of graph parameters that unifies treewidth, clique-width, twin-width, and generalised colouring numbers. We prove the equivalence of sev…

cs.CC2026

Complexity lower bounds for succinct binary structures of bounded clique-width with restrictions

Colin Geniet, Aliénor Goubault-Larrecq, Kévin Perrot

We present a Rice-like complexity lower bound for any MSO-definable problem on binary structures succinctly encoded by circuits. This work extends the framework recently developed…

cs.DS2026

Fast Shortest Path in Graphs With Sparse Signed Tree Models and Applications

Édouard Bonnet, Colin Geniet, Eun Jung Kim +1

A signed tree model of a graph is a compact binary structure consisting of a rooted binary tree whose leaves are bijectively mapped to the vertices of , together with 2-colo…

math.CO2026

Basis Number of Graphs Excluding Minors

Colin Geniet, Ugo Giocanti

The basis number of a graph is the minimum such that the cycle space of is generated by a family of cycles using each edge at most times. A classical result of Mac…

math.CO2026

Transducing Linear Decompositions of Tournaments

Colin Geniet, Fatemeh Ghasemi, Mamadou Moustapha Kanté

Bojańczyk, Pilipczuk, and Grohe [LICS '18] proved that for graphs of bounded linear clique-width, clique-decompositions of bounded width can be produced by a CMSO transduction. We…