A Deterministic Parallel Reduction from Weighted Matroid Intersection Search to Decision

2022 ◽  
pp. 1013-1035
Author(s):  
Sumanta Ghosh ◽  
Rohit Gurjar ◽  
Roshan Raj
1995 ◽  
Vol 19 (3) ◽  
pp. 432-440 ◽  
Author(s):  
E. Bampis ◽  
M. Elhaddad ◽  
Y. Manoussakis ◽  
M. Santha

2015 ◽  
Vol 07 (02) ◽  
pp. 1550019
Author(s):  
Jinyu Huang

A maximum linear matroid parity set is called a basic matroid parity set, if its size is the rank of the matroid. We show that determining the existence of a common base (basic matroid parity set) for linear matroid intersection (linear matroid parity) is in NC2, provided that there are polynomial number of common bases (basic matroid parity sets). For graphic matroids, we show that finding a common base for matroid intersection is in NC2, if the number of common bases is polynomial bounded. To our knowledge, these algorithms are the first deterministic NC algorithms for matroid intersection and matroid parity. We also give a new RNC2 algorithm that finds a common base for graphic matroid intersection. We prove that if there is a black-box NC algorithm for Polynomial Identity Testing (PIT), then there is an NC algorithm to determine the existence of a common base (basic matroid parity set) for linear matroid intersection (linear matroid parity).


2008 ◽  
Vol 623 (1) ◽  
pp. 120-128 ◽  
Author(s):  
Albin Wiśniewski ◽  
Wojciech K. Czerwiński ◽  
Piotr Paklepa ◽  
Piotr K. Wrona ◽  
Marek Orlik

1993 ◽  
Vol 9 (3) ◽  
pp. 175-200
Author(s):  
M Beemster ◽  
P.H Hartel ◽  
L.O Hertzberger ◽  
R.F.H Hofman ◽  
K.G Langendoen ◽  
...  

PEDIATRICS ◽  
1990 ◽  
Vol 85 (5) ◽  
pp. 765-767
Author(s):  
Susan R. Orenstein

To evaluate the effect of positioning on behavior in infants with gastroesophageal reflux, 48 infants younger than 6 months of age (range 1.5 to 28 weeks, median 13.5) with reflux were positioned continuously prone (24 infants) or seated (24 infants) during a 120-minute postprandial period, during which behavior was monitored continuously. The prone position was associated with more sleep time, 83.5 (16 to 113) vs 43 (0 to 117) minutes, P = .01. This increase in sleep time in the prone position could be largely accounted for by a tendency toward a decrease in crying time, 19 (0 to 82) vs 38.5 (0 to 91) minutes, P = .07, which is expressed further by the significantly smaller number of prone than seated infants who cried longer than 30 minutes, P = .02. A parallel reduction in noncrying awake time in the prone vs the seated position was not significant: 15 (0-51) vs 31 (3 to 84) minutes, P = .13.


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