سوال ۲۷ کنکور ارشد علوم کامپیوتر ۱۳۹۷

Read the relevant excerpt from paragraph 3 of the passage, then answer the question.

Passage 3 (paragraph 3): "Some readers may look with great expectation toward functional analysis, hoping to discover new powerful techniques that will enable them to solve important problems beyond the reach of simpler mathematical analysis. Such hopes are rarely realized in practice. The primary utility of functional analysis for the purposes of this book is its role as a unifying discipline, gathering a number of apparently diverse, specialized mathematical tricks into one or a few general geometric principles."

Question: The word "diverse" in paragraph 3 means ----------.