From wikipedia:
A dataset (or data set) is a collection of data.
Most commonly a dataset corresponds to the contents of a single database table, or a single statistical data matrix, where every column of the table represents a particular variable, and each row corresponds to a given member of the dataset in question. The dataset lists values for each of the variables, such as height and weight of an object, for each member of the dataset. Each value is known as a datum. The dataset may comprise data for one or more members, corresponding to the number of rows.
The term dataset may also be used more loosely, to refer to the data in a collection of closely related tables, corresponding to a particular experiment or event.
null set or empty set, is a set with no elements.
It means that all elements in A are included in set B, but not necessarily the other way around.
To 'sanctify' means to set apart as sacred.
it means to set or place apart.
It means that the boundaries of the set are not included in the set. For example, consider the set of numbers that are bigger than 1 and smaller than 2. The set is bounded by 1 and 2 but neither of these belong to the set.
"set forth" means to leave
It means to set a high standard.
equal set mean the set is equal equal est means that the set is equal
A is a subset of the larger set. This means that every element in set A is also an element in the larger set.
Undefined is defined. Define means to set the limits, explain. So, undefine means not to set limits or not to explain.
It means to say set set set wow. conditionality
"Poner" means "to place/put/set" in Spanish "Juego" can also mean "set"