What is "exponents"

Usage examples of "exponents".

How long before the whole of your prophecy will be fulfilled I cannot say, but under the shadow of so much fulfillment in so short a time, and with such threats from a man who is one of the most prominent exponents of the San Francisco mining-ring staring me and this whole community defiantly in the face and pointing to a completion of your augury, do you blame me for feeling that this communication is the last I shall ever write for the Press, especially when a sense alike of personal selfrespect, of duty to this money-oppressed and fear-ridden community, and of American fealty to the spirit of true Liberty all command me, and each more loudly than love of life itself, to declare the name of that prominent man to be JOHN B.