The old title of the blog was


which translates to

𝒇- Science, Technology, Engineering, Mechanics Mathematics Reviews

The title is also shaped like a photography term (f-stop), which is not yet my hobby.

If your computer has displayed the first letter (before the dashes/”-“) with a small rectangle or alien symbol, congratulations! You have adopted a browser or OS that poorly respects the Unicode standard.
Here are the attributes
Mathematical Bold Italic Small F.
Not necessarily my contents, have fun reading!