01807nam a22003017a 450000100060000000300090000600500170001500800410003201000170007302000180009002000150010803500240012304000330014704200140018005000210019408200120021510000350022724500660026226000360032830000260036450400520039050507830044265000500122570000320127594200120130799900170131995201690133629447BD-DhAAL20150802130228.0150802s2008    txu      b    001 0 eng d  a  2008924026  a9780979926907  a0979926904  a(OCoLC)ocn248774755  aJRYcJRYdAAMdDLCdBD-DhAAL  alccopycat00aQA43b.A534 200800a5102221 aAndreescu, Titu,d1956-91344010aProblems from the book /cTitu Andreescu, Gabriel Dospinescu.  aAllen, TX :bXYZ Press,cc2008.  axvi, 571 p. ;c22 cm.  aIncludes bibliographies (p. 563-569) and index.0 aSome useful substitutions -- Always Cauchy-Schwarz... --- Look at the exponent -- Primes and squares -- T2's lemma -- Some classical problems in extremal graphy theory -- Complex combinatorics -- Formal series revisited -- A brief introduction to algebraic number theory -- Arithmetic properties of polynomials -- Lagrange interpolation formula -- Higher algebra in combinatorics -- Geometry and numbers -- The smaller, the better -- Density and regular distribution -- The digit sum of a positive integer -- At the border of analysis and number theory -- Quadratic reciprocity -- Solving elementary inequalities using integrals --Pigeonhole principle revisited -- Some useful irreducibility criteria -- Cycles, paths, and other ways -- Some special applications of polynomials. 0aMathematicsvProblems, exercises, etc.9134411 aDospinescu, Gabriel.913442  2ddccBK  c35129d35129  00102ddc4070aBRACULbBRACULcGENd2015-08-02eDevelopment Book Agencyg11000.00l1m11o510 ANDp3010029447r2023-01-15s2020-01-11t1v22000.00w2015-08-02yBK