Last week Japan was again threatening China while Italy was mobilizing 45,000 more men for possible war service against Abyssinia. Also last week Lewis Fry Richardson, D. Sc., F. R. S., principal of Paisley Technical College, showed in the British journal Nature how the approach of any two nations toward war can be reduced to mathematical equations:
dx(1) /dt= k(1)(2)∙x(2)-√(1) + Δ(1)
dx(2)/dt=k(2)(1)∙x(1)-√(2)∙x(2)+Δ(2)
The symbol d, common in calculus, operates to make the left side of the equation a quantity containing the element of change. The suffixes (1) and (2), explains Dr. Richardson, identify the symbols which they follow as the opposing...
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