Food Some cultures consume blood, sometimes in the form of blood sausage, as a thickener for sauces, or in a cured, salted form for times of food scarcity, and others use blood in stews such as jugged hare. Some cultures and people do not consume meat or animal food products for cultural, dietary, health, ethical, or ideological reasons. Vegetarians choose to forgo food from animal sources to varying degrees. Vegans do not consume any foods that are or contain ingredients from an animal source. Adulteration is a legal term meaning that a food product fails to meet the legal standards. One
Slowly varying function if for all , . A function for which the limit is finite but nonzero for every , is called a "regularly varying function". These definitions are due to Jovan Karamata. Regularly varying functions have some important properties: a partial list of them is reported below. More extensive analyses of the properties characterizing regular variation are presented in the monograph by . . The limit in and is uniform if is restricted to a compact interval. . Every regularly varying function is of the form where Note. This implies that the function in has necessarily to be of the following