The two main functions of entrepreneurs are first, taking the risk of developing new products or services and, second, successfully bringing new products and services into the marketplace. French ...

Editor’s note: Guest contributor Eric Ries is a consultant and the author of The Lean Startup. Drew Houston is featured on the cover of Forbes magazine as the entrepreneur who out-Steve Jobs’ed Steve ...

This is a preview. Log in through your library . Abstract Abstract.We prove that 𝐿²-norm of fractional derivatives of product of two functions can be estimated by 𝐿² and 𝐿¹-norms of derivatives of ...