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The phrase "a substantial topic in" is correct and usable in written English.
It can be used when discussing a significant subject within a particular field or area of study.
Example: "Climate change is a substantial topic in environmental science that requires urgent attention."
Alternatives: "an important issue in" or "a significant subject in".
Exact(1)
It is well known that a solution of the equation A x = 0 (i.e., 〈 z, A x 〉 = 0, ∀ z ∈ E ) is a solution of the variational inequality 〈 z − x, A x 〉 ≥ 0, ∀ z ∈ E. Therefore, the theory of monotone operators and its applications to nonlinear partial differential equations and variational inequalities are related and have been involved in a substantial topic in nonlinear functional analysis.
Similar(59)
But Dr. Lisa Capaldini, a San Francisco primary care physician, says that anal Pap tests had nonetheless emerged in the past couple of years as a substantial topic of debate among her colleagues.
One of the substantial topics in business field and also for military purposes is radar absorbing technology.
It should be emphasised that a substantial amount of in-depth exploration of this topic remains.
The primary barrier to a substantial increase in work on this topic has been the lack of an appropriate homogeneous synthetic standard that can be shared between laboratories worldwide.
A seminar devoted to the research and writing, under the instructor's supervision, of a substantial paper on a topic in American studies.
As we can see in Table 1, there seems to be a substantial increase in the interest of graduate students in the topic of agile methods.
He also will contribute to related topics at the GCFP, where he will play a substantial role in shaping and delivering the Center's research agenda.
Although there is increasing interest in the topic of climate change impacts on protected areas, there is also a substantial bias in the geographical distribution of the studies published.
A panel of scientists questioned on the topic at a plenary session at the Astronomical Society of the Pacific contended that the Internet played a substantial role in allowing this doomsday date to gain more traction than previous similar panics.
Nevertheless, a substantial gap in the literature exists.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com