Dold–Thom theorem

In algebraic topology, the Dold–Thom theorem, proved by Albrecht Dold and René Thom (1956, 1958), states that the homotopy group π_i(SP(X)) of the infinite symmetric product SP(X) of a connected CW complex X is the i-th singular reduced homology group of X, usually denoted by $\widetilde{H}_i(X;\mathbb{Z})$.

References

• Dold, Albrecht; Thom, René (1956), "Une généralisation de la notion d'espace fibré. Application aux produits symétriques infinis", Les Comptes rendus de l'Académie des sciences 242: 1680–1682, MR 0077121
• Dold, Albrecht; Thom, René (1958), "Quasifaserungen und unendliche symmetrische Produkte", Annals of Mathematics. Second Series 67: 239–281, ISSN 0003-486X, JSTOR 1970005, MR 0097062

External links

• http://mathoverflow.net/questions/37647/the-dold-thom-theorem-for-infinity-categories