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The area of mathematics called "gauge field theory," though investigated in the nineteenth century, has only relatively recently been applied to problems in contemporary quantum mechanics. ████████████ █████████ ███████ ████ ██ ████████████ ███ ████████████ ██ █████ ██ ███ █████ ██████████ ████████ ████ ██████ ████████ ██████████ ████ ███ ██ ███ ██████████ ██████ █████████ ███ ███ ███████████ ███████████ ███ █████████ ███████ ███████████
Summary
Gauge field theory is an area of math that, although investigated in the 19th century, has only recently been applied. Differential geometry is another area of math that was investigated in the 19th century, which was a long time before Einstein determined that one of its offspring, tensor analysis, was appropriate for the theory of general relativity.
Strongly Supported Conclusions
Some fields of math may be applicable many years after they are first investigated.
Some fields of math relevant to a problem may have been discovered many years in the past.
5.
Which one of the following ██ ████ ███████████ ██ ███ ████████ █████████ ██████
a
Applications of some ███ ████████ ██ ██████████ ██ ███████████ ███ ████████████ █████ ████ █████ ███ █████████ ██ █████ ████████ ██ ███████████
b
Mathematicians are sometimes ████ ██ ██████████ █████ ████████ ██ █████ ███████ ████ █████ ██████ ██ ██████ ███████████
c
The discoveries of ██████ ███████ █████ ███ ████ ████ ████████ ███████ █████ ████████████ ████████ ████ ██ ███ ██████████ ████████
d
The nineteenth century ██████ ███ █████ █████ █████ ██ █ ██████ ██ █████ ████████████ ████████████
e
Mathematics tends to ███████ ████ ███████ ████ ███ ██ ███ ████████ █████████