Last name of louis-eugene, who sold his french thermal spring with naturally carbonated water in 1903

The greatest integer function, shown below, is defined to be the greatest less than or equal to x. f(x) = [[x]]

The theory that human infants are born with a rudimentary knowledge of the world and they use their experience to expand this knowledge underlies the hypothesis.

when alfonso says, "it would have been tough to be a father at age 21, but being one at age 28 is super," he is noting the important role that factors play in human development.