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<html>
<head>
<title>
DUEL_SIMULATION - Simulation of a Duel
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
DUEL_SIMULATION <br> Simulation of a Duel
</h1>
<hr>
<p>
<b>DUEL_SIMULATION</b>
is a FORTRAN90 program which
simulates N instances of a duel between two players.
</p>
<p>
Player A fires at player B, and hits with a probability of A_ACCURACY.
If Player A misses, then Player B fires at Player A, hitting with
a probability of B_ACCURACY.
</p>
<p>
The duel continues with alternating shots until only one player
survives.
</p>
<p>
The simulation is intended to estimate the probabilities that a
player will survive.
</p>
<p>
The exact probability that player 1 will survive is
<blockquote>
P(1) / ( P(1) + P(2) - P(1) * P(2) )
</blockquote>
while player 2's chance is
<blockquote>
P(2) * ( 1 - P(1) ) / ( P(1) + P(2) - P(1) * P(2) ).
</blockquote>
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this web page
are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Languages:
</h3>
<p>
<b>DUEL_SIMULATION</b> is available in
<a href = "../../c_src/duel_simulation/duel_simulation.html">a C version</a> and
<a href = "../../cpp_src/duel_simulation/duel_simulation.html">a C++ version</a> and
<a href = "../../f77_src/duel_simulation/duel_simulation.html">a FORTRAN77 version</a> and
<a href = "../../f_src/duel_simulation/duel_simulation.html">a FORTRAN90 version</a> and
<a href = "../../math_src/duel_simulation/duel_simulation.html">a Mathematica version</a> and
<a href = "../../m_src/duel_simulation/duel_simulation.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../f_src/brownian_motion_simulation/brownian_motion_simulation.html">
BROWNIAN_MOTION_SIMULATION</a>,
a FORTRAN90 program which
simulates Brownian motion in an M-dimensional region.
</p>
<p>
<a href = "../../f_src/fair_dice_simulation/fair_dice_simulation.html">
FAIR_DICE_SIMULATION</a>,
a FORTRAN90 program which
simulates N tosses of 2 dice, making a histogram of the results.
</p>
<p>
<a href = "../../f_src/ising_2d_simulation/ising_2d_simulation.html">
ISING_2D_SIMULATION</a>,
a FORTRAN90 program which
carries out a Monte Carlo simulation of an Ising model.
a 2D array of positive and negative charges,
each of which is likely to flip to be in agreement with neighbors.
</p>
<p>
<a href = "../../f_src/ising_3d_simulation/ising_3d_simulation.html">
ISING_3D_SIMULATION</a>,
a FORTRAN90 program which
carries out a Monte Carlo simulation of an Ising model,
a 3D array of positive and negative charges,
each of which is likely to flip to be in agreement with neighbors.
</p>
<p>
<a href = "../../f_src/poisson_simulation/poisson_simulation.html">
POISSON_SIMULATION</a>,
a FORTRAN90 library which
simulates a Poisson process in which events randomly occur with an
average waiting time of Lambda.
</p>
<p>
<a href = "../../f_src/reactor_simulation/reactor_simulation.html">
REACTOR_SIMULATION</a>,
a FORTRAN90 program which
a simple Monte Carlo simulation of the shielding effect of a slab
of a certain thickness in front of a neutron source. This program was
provided as an example with the book "Numerical Methods and Software."
</p>
<p>
<a href = "../../f_src/three_body_simulation/three_body_simulation.html">
THREE_BODY_SIMULATION</a>,
a FORTRAN90 program which
simulates the behavior of three planets, constrained to lie in a plane,
and moving under the influence of gravity,
by Walter Gander and Jiri Hrebicek.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
Paul Nahin,<br>
Duelling Idiots and Other Probability Puzzlers,<br>
Princeton University Press, 2000,<br>
ISBN13: 978-0691009797,<br>
LC: QA273.N29.
</li>
<li>
Martin Shubik,<br>
"Does the Fittest Necessarily Survive?",<br>
in Readings in Game Theory and Political Behavior,<br>
edited by Martin Shubik,<br>
Doubleday, 1954,<br>
LC: H61.S53.
</li>
</ol>
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "duel_simulation.f90">duel_simulation.f90</a>, the source code.
</li>
<li>
<a href = "duel_simulation.sh">duel_simulation.sh</a>,
BASH commands to compile the source code.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>DUEL_SIMULATION</b> simulates a duel.
</li>
<li>
<b>DUEL_RESULT</b> returns the outcome of a single duel.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../f_src.html">
the FORTRAN90 source codes</a>.
</p>
<hr>
<i>
Last revised on 17 September 2012.
</i>
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