Biology and ‘physics envy’

WARNING: Physics Envy May Be Hazardous To Your Wealth!∗

The quantitative aspirations of economists and financial analysts have for many years been based on the belief that it should be possible to build models of economic systems—and financial markets in particular—that are as predictive as those in physics. While this perspective has led to a number of important breakthroughs in economics, “physics envy” has also created a false sense of mathematic...

Incomputability in Physics and Biology

Computability originated from Logic within the frame of the original path proposed by the founding fathers of the modern foundational analysis in Mathematics (Frege and Hilbert). This theoretical itinerary, which largely focused in Logic and Arithmetic, departed in principle from the contemporary renewed relations between Geometry and Physics. In particular, the key issue of physical measuremen...

Time in Biology and Physics

Biology and Physics of Peloids

PELOIDS CONSIST OF humus and minerals formed over a very long period by physical, chemical, biologic, and geologic processes. They are used in treatment either in their natural state or after fermentation. They are applied as poultices or in the forms of baths. They are sometimes used internally. Of the many classification proposed, we shall discuss only the more important ones: humolites and m...

Envy, Multi Envy, and Revenue Maximization

We study the envy free pricing problem faced by a seller who wishes to maximize revenue by setting prices for bundles of items. Consistent with standard usage [9] [10], we define an allocation/pricing to be envy free if no agent wishes to replace her allocation (and pricing) with those of another agent. If there is an unlimited supply of items and agents are single minded then we show that find...