Like kaffir lime leaves and other Southeast Asian spices, lemongrass has no substitute. It has a distinctly warm, lemon aroma, but not the sour taste of the fruit. The citrus flavor of lemongrass instead is slightly sweet, and has the familiar, but milder, bite of ginger.ike kaffir lime leaves and other Southeast Asian spices, lemongrass has no substitute. It has a distinctly warm, lemon aroma, but not the sour taste of the fruit. The citrus flavor of lemongrass instead is slightly sweet, and has the familiar, but milder, bite of ginger.
Mathematics is the classification and study of all possible patterns. Walter Warwick Sawyer, 1955. Yet another approach makes abstraction the defining criterion: Mathematics is a broad-ranging field of study in which the properties and interactions of idealized objects are examined. Wolfram MathWorld. Definitions in general reference works
In mathematics, an expression (or mathematical expression) is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, punctuation, grouping, and other aspects of logical syntax.n general the meaning of expressions is not limited to designating values; for instance, an expression might designate a condition, or an equation that is to be solved, or it can be viewed as an object in its own right that can be manipulated according to certain rules.