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- John C. Wierman
- Combinatorics, Probability & Computing
- 1995

- John C. Wierman
- Combinatorics, Probability & Computing
- 2002

- John C. Wierman
- Combinatorics, Probability & Computing
- 2003

- John C. Wierman
- Random Struct. Algorithms
- 2002

Rigorous bounds for the bond percolation critical probability are determined for three Archimedean lattices: .7385 < pc((3, 12 ) bond) < .7449, .6430 < pc((4, 6, 12) bond) < .7376, .6281 < pc((4, 8 ) bond) < .7201. Consequently, the bond percolation critical probability of the (3, 12) lattice is strictly larger than those of the other ten Archimedean… (More)

- Matthew R A Sedlock, John C. Wierman
- Physical review. E, Statistical, nonlinear, and…
- 2009

For a certain class of two-dimensional lattices, lattice-dual pairs are shown to have the same bond-percolation critical exponents. A computational proof is given for the martini lattice and its dual to illustrate the method. The result is generalized to a class of lattices that allows the equality of bond-percolation critical exponents for lattice-dual… (More)

- John C. Wierman
- Physical review. E, Statistical, nonlinear, and…
- 2002

Recent mathematical results regarding percolation thresholds are relevant to efforts to find universal formulas for the percolation threshold. This Brief Report uses exact solutions and recent rigorous bounds for site and bond percolation thresholds to demonstrate that any universal formula based on only the dimension and the coordination number must… (More)

- John C. Wierman, David J. Marchette
- Computational Statistics & Data Analysis
- 2004

Computer viruses are an extremely important aspect of computer security, and understanding their spread and extent is an important component of any defensive strategy. Epidemiological models have been proposed to deal with this issue, and we present one such here. We consider a modi0cation of the Susceptible–Infected–Susceptible (SIS) epidemiological model… (More)

- Edward R. Scheinerman, John C. Wierman
- Discrete Applied Mathematics
- 1989

- John C. Wierman
- 2007

A new substitution method improves bounds for critical probabilities of the bond percolation problem on the Kagomé lattice, K. The method theoretically produces a sequence of upper and lower bounds, in which the second pair of bounds establish .5182 ≤ pc(K) ≤ .5335.

- Elvan Ceyhan, Carey E. Priebe, John C. Wierman
- Computational Statistics & Data Analysis
- 2006