Read e-book online Mathematics and Politics: Strategy, Voting, Power and Proof PDF

By Alan D. Taylor

ISBN-10: 0387776435

ISBN-13: 9780387776439

ISBN-10: 0387776451

ISBN-13: 9780387776453

Mathematics and Politics calls for no must haves in both topic. The underlying philosophy comprises minimizing algebraic computations whereas targeting the conceptual facets of arithmetic within the context of real-world questions in political technological know-how. This new addition has an further co-author, Allison Pacelli, and covers six significant subject matters: social selection, yes-no balloting structures, political energy, game-theoretic types of foreign clash, equity, and escalation. as well as having new chapters (treating apportionment and clash resolution), the textual content has been widely reorganized and the variety of workouts elevated to over 300.


"Taylor has performed a impressive task of unveiling the ability of deductive reasoning in … the strategic offerings actors make in clash events … a penetrating research of either real-life and hypothetical situations."

-- Steven Brams, big apple University

Alan Taylor’s booklet is thoroughly crafted. he's ever conscious of his viewers, yet relentlessly presses the start pupil to appreciate extra and more."

-- Samuel Merrill III, American Mathematical Monthly

This publication is a different and invaluable resource … assurance is thorough and broad; principles are defined in actual fact and at a suitable mathematical level."

-- Ed Packel, Lake woodland College

"… arithmetic and Politics is an almost excellent answer, both for periods or for the intense expert who desires to retool. … The writing is crisp, and the experience of pleasure approximately studying arithmetic is seductive."

-- Michael Munger, Chance

" i love this booklet. It’s great arithmetic with critical applications."

-- John Ewing, Indiana University

"Now we've, in Alan Taylor’s booklet, an advent to those principles that's delightfully lucid and calls for virtually no mathematical prerequisites."

-- Phillip D. Straffin, university arithmetic Journal

"[The e-book] breaks new floor and will stand because the definitive undergraduate textbook during this region for really a few time."

-- Stan Wagon, Macalester College

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Additional resources for Mathematics and Politics: Strategy, Voting, Power and Proof

Sample text

We define the win-loss record for an alternative to be the number of strict wins against other alternatives in a head-to-head competition minus the number of strict losses. For example, the win-loss record of a Condorcet winner is equal to one less than the total number of alternatives. Under Copeland’s procedure, an alternative is a winner if no alternative has a strictly better win-loss record. (a) Prove that Copeland’s procedure satisfies monotonicity. (b) Prove that Copeland’s procedure satisfies the Condorcet winner criterion.

Consider the five alternatives a, b, c, d, and e and the following sequence of seventeen preference lists grouped into blocs of size five, four, three, three, and two: Voters 1–5 a b c d e Voters 6–9 e b c d a Voters 10–12 d b c e a Voters 13–15 c b d e a Voters 16 and 17 b c d e a We claim first that b is the Condorcet winner. The results and scores are as follows: b defeats a (12 to 5), b defeats c (14 to 3), b defeats d (14 to 3), b defeats e (13 to 4). 6. Negative Results—Proofs 23 of the procedure alternative b is deleted from all the lists since it has only two first-place votes.

Lists: x y z Consider the following preference x z y y z x (a) Evaluate Net(x > y), Net(x > z), B(x), and B(z). (b) Prove each of the following for this example: Net(x > y) + Net(x > z) = B(x). Net(y > z) + Net(y > x) = B( y). Net(z > x) + Net(z > y) = B(z). 11. Suppose we have a social choice procedure that satisfies monotonicity. Suppose that for the four alternatives a, b, c, d we have a sequence of individual preference lists that yields d as the social choice. Suppose person one changes his list: from: a b c d to: d a b c Show that d is still the social choice, or at least tied for such.

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Mathematics and Politics: Strategy, Voting, Power and Proof by Alan D. Taylor

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