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» Lower bounds for dynamic connectivity
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PODS
2009
ACM
119views Database» more  PODS 2009»
14 years 5 months ago
Dynamic indexability and lower bounds for dynamic one-dimensional range query indexes
The B-tree is a fundamental external index structure that is widely used for answering one-dimensional range reporting queries. Given a set of N keys, a range query can be answere...
Ke Yi
WDAG
2001
Springer
104views Algorithms» more  WDAG 2001»
13 years 9 months ago
A New Synchronous Lower Bound for Set Agreement
Abstract. We have a new proof of the lower bound that k-set agreement requires f/k + 1 rounds in a synchronous, message-passing model with f crash failures. The proof involves cons...
Maurice Herlihy, Sergio Rajsbaum, Mark R. Tuttle
CORR
2011
Springer
174views Education» more  CORR 2011»
12 years 11 months ago
Lower bounds on the obstacle number of graphs
Given a graph G, an obstacle representation of G is a set of points in the plane representing the vertices of G, together with a set of connected obstacles such that two vertices ...
Padmini Mukkamala, János Pach, Döm&oum...
AIML
2004
13 years 6 months ago
A Lower Complexity Bound for Propositional Dynamic Logic with Intersection
This paper shows that satisfiability for Propositional Dynamic Logic with Intersection is EXPSPACE-hard. The proof uses a reduction from the word problem for alternating, exponent...
Martin Lange
STACS
1999
Springer
13 years 9 months ago
Lower Bounds for Dynamic Algebraic Problems
Abstract. We consider dynamic evaluation of algebraic functions (matrix multiplication, determinant, convolution, Fourier transform, etc.) in the model of Reif and Tate; i.e., if f...
Gudmund Skovbjerg Frandsen, Johan P. Hansen, Peter...