Lie Groups
from Richard Borcherds (YouTube)
from Mathemaniac (on YouTube)
from Oxford (YouTube)
What Counts
Overview Counting Number Origin(s) of Number Communicating Number (Penn State) History of Writing A Partial History of Counting Counting? Writing and Numbers History of Numeral Systems Construction of the Natural Numbers (MIT) Construction of Number Systems A Partial History of Numbers Number Theory Peano Axioms Peano Difference (Philosophy) Development Counting Bee Numbers and Language Timeline Evolution Overview Timeline The Big Bang: ~13.8 Billion Years Ago The Earth: ~4.5 Billion Years Ago Human Beings: ~3 Million to ~1.9 Million Years Ago Modern Human Beings: ~200,000 Years Ago Human Language; ~150,000 Years Ago Evidence of Counting: ~46,000 to ~10,000 Years Ago The Anthropocene: ~8,000 Years Ago Evidence of Human Language: ~6,000 Years Ago Evidence of Writing (i.e., not Proto-Writing): ~5,200 Years Ago Questions Is Counting Prior to Number? Is There Number without Language? Is Counting Prior to Language? Are Words Required for Numbers? Does Language Give Sense to Numb...
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