6 research outputs found
Parameterized Complexity of Path Set Packing
In PATH SET PACKING, the input is an undirected graph , a collection of simple paths in , and a positive integer . The problem is to decide
whether there exist edge-disjoint paths in . We study the
parameterized complexity of PATH SET PACKING with respect to both natural and
structural parameters. We show that the problem is -hard with respect to
vertex cover plus the maximum length of a path in , and -hard
respect to pathwidth plus maximum degree plus solution size. These results
answer an open question raised in COCOON 2018. On the positive side, we show an
FPT algorithm parameterized by feedback vertex set plus maximum degree, and
also show an FPT algorithm parameterized by treewidth plus maximum degree plus
maximum length of a path in . Both the positive results complement the
hardness of PATH SET PACKING with respect to any subset of the parameters used
in the FPT algorithms
An FPT algorithm for Matching Cut and d-cut
Given a positive integer , the -CUT problem is to decide if an
undirected graph has a non trivial bipartition of such
that every vertex in (resp. ) has at most neighbors in (resp.
). When , this is the MATCHING CUT problem. Gomes and Sau, in IPEC
2019, gave the first fixed parameter tractable algorithm for -CUT, when
parameterized by maximum number of the crossing edges in the cut (i.e. the size
of edge cut). However, their paper doesn't provide an explicit bound on the
running time, as it indirectly relies on a MSOL formulation and Courcelle's
Theorem. Motivated by this, we design and present an FPT algorithm for the
MATCHING CUT (and more generally for -CUT) for general graphs with running
time where is the maximum size of the edge cut.
This is the first FPT algorithm for the MATCHING CUT (and -CUT) with an
explicit dependence on this parameter. We also observe a lower bound of
with same parameter for MATCHING CUT assuming ETH
Reversal of Glanzmann thrombasthenia platelet phenotype after imatinib treatment in a pediatric chronic myeloid leukemia patient
Chronic Myelogenous Leukemia (CML) is a myeloproliferative neoplasm characterized by proliferation of Philadelphia positive clonal pluripotent hematopoietic cells. Bleeding is a rare presentation of CML that can occur due to platelet dysfunction. Both pre-treatment and post-treatment platelet function abnormalities in CML have been described in the literature. We describe a rare case of childhood CML who presented with mucocutateous bleeding manifestations. On laboratory workup, a Glanzmann Thrombasthenia (GT) like platelet phenotype was demonstrated along with confirmation of diagnosis of CML in chronic phase. The acquired nature of platelet function defect was confirmed by demonstrating recovery of platelet antigens glycoprotein IIb/IIIa after achieving complete hematological response with Imatinib. Due to presenting complaint of bleeding diathesis and absence of hepatosplenomegaly, the case was undiagnosed for CML until the patient reported to us. Careful evaluation of complete blood counts, peripheral blood picture and detailed laboratory workup was the window to proper diagnosis and treatment in this case
Book of Abstracts of the 2nd International Conference on Applied Mathematics and Computational Sciences (ICAMCS-2022)
It is a great privilege for us to present the abstract book of ICAMCS-2022 to the authors and the delegates of the event. We hope that you will find it useful, valuable, aspiring, and inspiring. This book is a record of abstracts of the keynote talks, invited talks, and papers presented by the participants, which indicates the progress and state of development in research at the time of writing the research article. It is an invaluable asset to all researchers. The book provides a permanent record of this asset.
Conference Title: 2nd International Conference on Applied Mathematics and Computational SciencesConference Acronym: ICAMCS-2022Conference Date: 12-14 October 2022Conference Organizers: DIT University, Dehradun, IndiaConference Mode: Online (Virtual