Place of birth................. Ypsilanti, Michigan, United States of America

Location of birth.............. Earth. 42deg15min N. 083deg38min W.

Height......................... 5 ft 8 in (173 cm)

Weight......................... Zero. (see note 1)

Rest mass...................... 136 lbm (62 kg)

Rest mass energy equivalent.... 1300 megatons TNT

Gravitational monopole moment.. 2.5E-04 in^3/s^2 (4.1E-09 m^3/s^2)

Integer part of age in years... 23 (see note 2)

Ethnicity...................... non-ethnic

Occupation..................... postdoc

Employer....................... Institute for Advanced Study

Thermal neutron cross section.. 1.3E+27 barns (total, spin-averaged)

Moment of inertia.............. 17 to 120 lbm ft^2 (0.7 to 5 kg m^2) (see note 3)

Thermal power output........... 0.1 Btu/sec (100 W)

Radioisotopic power output..... 1.6E-12 Btu/sec (1.7 nW)

**Notes.**

- My metaphysical interpretation of the Equivalence Principle is that gravity is a fictitious force.
- Used to be 21 at parties. Still wish I were.
- Moment of inertia is given about center of mass, but varies depending on direction of axis and time of measurement.

Chemical element............... carbon, C (Z=6)

Isotope........................ uranium 235, U235 (Z=92, A=235, N=143, I=7/2, P=-1)

Color.......................... 405 nm (the Hg I line)

Scaling law.................... gravity's inverse-square law

Symmetry....................... isospin SU(2) (even though it's approximate)

Group.......................... J = A5 (see note 4)

Field.......................... C (see note 5)

Elementary particles........... neutral pion and neutron

Function....................... f(x)=0

Special function............... the gamma function

Flavor......................... charm

Multipole expansion term....... quadrupole

Type of rock................... granite

Type of star................... white dwarf

Type of volcano................ cinder cone

Type of organism............... mushroom

Type of cloud.................. mushroom

Conic section.................. ellipse

Quadric surface................ hyperboloid of one sheet

Girl........................... Annika Peter

**Notes.**

- My original favorite group was
*J*, the group of parity-conserving symmetries of the buckyball. It has order 60, and is simple. I have since learned that*J*is isomorphic to the alternating group of the fifth order,*A*_{5}. - My friend Michael Schein (a graduate student at Harvard) writes to me: "If your favorite field is C, then you are a really boring person. The problem is that C is algebraically closed. While that gives you the Nullstellensatz and makes algebraic geometry much simpler, it also means that there isn't much interesting arithmetic. The field Q and its finite extensions are much more exciting. You should go into number theory and study them." I maintain that C has far more demonstrated relevance to the world than the finite extensions of Q. (C is the complex numbers, Q is the rational numbers.)