Cambria Math  Suggeriti da akira1975 

I think they used Cambria Math.
https://www.myfonts.com/collections/cambria-math-font-microsoft-corporation
https://learn.microsoft.com/en-us/typography/font-list/cambria-math

Type “𝓜𝓪𝓻𝓲𝓪 𝓒𝓮𝓬𝓲𝓵𝓲𝓪” on the type tester.

𝓜: u+1D4DC
𝓪: u+1D4EA
𝓻: u+1D4FB
𝓲: u+1D4F2
𝓒: u+1D4D2
𝓮: u+1D4EE
𝓬: u+1D4EC
𝓲: u+1D4F2
𝓵: u+1D4F5