16th century.
they wanted numbers below zero and called them negative numbers
Possibly 5th Century BC
A.d. 101 - a.d. 200
Irrational numbers were known in India around 7th Century BCE but there existence as a different class of number but they had not proved their existence. That is sometimes attributed to Hippasus, a Greek philosopher of the Pythagorean school in the 5th Century BCE.
Is a Russian Art nouveau painter of the early XXth century.
Charles Terrasse has written: 'Van Gogh, peintre' 'French painting in the XXth century'
Real Madrid C.F. officially is the best football club of XXth century.
XXth century: Balkanic war, World War I, World War II and many other wars during a long unfortunate history.
Elsa V. Artadi has written: 'The economic tragedy of the XXth century' -- subject(s): Economic conditions
16th century.
numbers devoloped on 1st - 5th century
19th century. Take the first two numbers and add one. (Only works for 4-digit numbers.
The 18th century, whatever the first 2 numbers are, the century is one number higher
Denis Hermann has written: 'Shi'i trends and dynamics in modern times (XVIIIth-XXth centuries) ='
Jan Vanderhaven is a fictional doctor from early XXth century, who was studying leprosy before going to Suriname to study the case of living-dead people. He finaly define Solanum virus which is, in Max Brooks'Zombie Survival Guide fictional version of our world, the origin of zombie symptoms.
Negative numbers were accepted in the 1700's