A short proof of Sucheston's characterization of mixing

A Short Proof of Guenin's Characterizati

A Short Proof of Guenin's Characterization of Weakly Bipartite Graphs

✍ Alexander Schrijver 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 79 KB

We give a proof of Guenin's theorem characterizing weakly bipartite graphs by not having an odd-K 5 minor. The proof curtails the technical and case-checking parts of Guenin's original proof.

A Short Proof of Weyl's Lemma

✍ Roland Lemmert 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 71 KB

Let Q c R a be open and LZ~=ZcaD026 be n linear differential opentor with constant coefficients, and adjoint L\*zi = C (l)'"'e,Dazs. We give D proof of the following variant of WEYL'S lemma. d Letit~rta. Every contiwma 8olutim of h = O in the distributional sense is the iocalhj uniform h i t of G+'-

A short proof of fisher's inequality

✍ Renaud Palisse 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 71 KB

Nous donnons ici une dtmonstration nouvelle, trts courte, de I'iGgaliti de Fisher, qui gCntralise un rCsultat bien connu de de Bruijn et ErdGs. Cette dtmonstration utilise essentiellement une id&e de Tverberg (1982) pour dt-montrer un autre tnonct combinatoire. We prove the following result.

A short proof of Darboux's lemma

✍ Donald E. Knuth; Herbert S. Wilf 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 106 KB

A short proof of Darboux's lemma

✍ Donald E. Knuth; Herbert S. Wilf 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 102 KB

Elementary asymptotic methods suffice to establish asymptotic series for the coeficients of analytic functions with algebraic singularities.

A short proof of Gamas’s theorem

✍ Andrew Berget 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 95 KB