Save guides, add subjects and pick up where you left off with your BBC account. Write the numbers in a vertical list, lining up the decimal points. If the numbers have a different amount of digits, ...

These are decimal numbers, and dots above some of the digits make them recurring decimals. One dot means the digit under it repeats infinitely. In other words, it goes on forever (and ever and ever).

Math historian Glen Van Brummelen came across decimal points in Giovanni Bianchini's manuscript, Tabulae primi mobilis B. Van Brummelen / Historia Mathematica, 2024 For years, historians thought ...