MathSciNet bibliographic data MR590754 (81m:54040) 54D35 Hindman, Neil Sums equal to products in $\beta {\bf N}$$\beta {\bf N}$. Semigroup Forum 21 (1980), no. 2-3, 221–255. Article

For users without a MathSciNet license , Relay Station allows linking from MR numbers in online mathematical literature directly to electronic journals and original articles. Subscribers receive the added value of full MathSciNet reviews.

 American Mathematical Society 201 Charles Street Providence, RI 02904-6248 USA