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Kalombyr2019-09-18 19:38:23
Mathematics
Kalombyr, 2019-09-18 19:38:23

What does the symbol in a formula mean?

Good day!
I came across such a formula:
5d825d1b373bc245156547.png
Tell me, what do these two brick walls mean?

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Armenian Radio, 2019-09-18
@Kalombyr

That you do not have a mathematical font installed in the Word, or wherever you look.

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