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In mathematics, an empty product, or nullary product or vacuous product, is the result of multiplying no factors. It is by convention equal to the multiplicative identity (assuming there is an identity for the multiplication operation in question), just as the empty sum—the result of adding no numbers—is by convention zero, or the additive identity.
Since the empty category is vacuously a discrete category, a terminal object can be thought of as an empty product (a product is indeed the limit of the discrete diagram {X i}, in general). Dually, an initial object is a colimit of the empty diagram 0 → C and can be thought of as an empty coproduct or categorical sum.
The empty product on numbers and most algebraic structures has the value of 1 (the identity element of multiplication), just like the empty sum has the value of 0 (the identity element of addition). However, the concept of the empty product is more general, and requires special treatment in logic, set theory, computer programming and category ...
In actuality, any of Amazon's 3 million marketplace sellers can use the Amazon warehouse to house and ship their items and get the so-called "coveted" mark on its products.
Washington's attorney general said Amazon "unreasonably restrained competition in order to maximize its own profits off third-party sales."
The best and easiest way to shop for Amazon gift cards is online directly from Amazon, especially considering the option to mail it, print at home or gift it as an e-card. You can choose preset ...
In Doctorow's original post, he discussed the practices of Amazon. The online retailer began by wooing users with goods sold below cost and (with an Amazon Prime subscription) free shipping. Once its user base was solidified, more sellers began to sell their products through Amazon. Finally, Amazon began to add fees to increase profits.
Second, and empty product is not the result of anything, it is something like "0!" whose value is 1, but it is not identical to 1 (or otherwise conversely "1 is an empty product", which seems a bad formulation). In short, one should make distinction between expressions and there values, and an empty product is an expression.