In this paper I start with a search of the accepted meanings of the word fundamental beginning with the words that it is derived from and going forward to its present general meanings. I then look for the way that its meanings apply to structure in physics and finally use this understanding to apply it to the various structural levels of the construction of the universe. I then do a quick analysis of that structure to see what it points to as the next possible unknown area of structure to be understood and to yet be developed. In order to accommodate all main structural levels, etc., I could only cover the basic fundamentals in each one briefly due to space limitations for the paper. I believe that it should be adequate to demonstrate the basic topic concept of “What is Fundamental”, however.
Paul N Butler