Morten St George Theory

[Morten St. George]

Morten, I've already told you the plus sign was widely used in charms (in the 14th and 15th centuries).

On charms? JP, the plus sign, as a crisscross of two short lines, has to be one of the most fundamental things ever drawn by humans. You can probably find it in Neanderthal caves and everywhere else ever since.

However, the plus sign as a mathematical operator, particularly in conjunction with the equal (=) sign, did not come into common use until the middle of the 16th century.

You're the one who is inventing the "fact" that it is being used as a mathematical symbol on this folio. The plus sign was used for many different purposes. I've already listed five of them.

Your theory-driven assumption "decided" it was a mathematical operator, but the truth is that it can mean a number of things.

I interpret the following as " + +c " and took it as a signal to start counting.



The second "+" is very faint on the left side. Does it look like a "+" on your high-resolution computer?