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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.
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.
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.
Amazon offers convenience and speed, but lacks good deals in certain categories, such as groceries and big appliances. Oh, and skip the bogus COVID masks and treatments, too.
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.
Costco clearly wins this round, as it will cost $20 more to buy the iced teas on Amazon. Even with Costco’s 2-day delivery fee of $3, it’s still more cost-effective to buy them, as these are ...
A production price for outputs in Marx's sense always has two main components: the cost-price of producing the outputs (including the costs of materials and equipment used, operating expenses, and wages) and a gross profit margin (the additional value realized in excess of the cost-price, when goods are sold, which Marx calls surplus value).
(Reuters) - Amazon.com launched a low-cost ecommerce service called Amazon Haul for some customers in the United States giving them a selection of products at $20 or less, the online retailer said ...