xx
RHS
R , Re, Rm
Rm#
R
R e (R)
~n
SL(n, C)
SO (n,~)
S1 (.so(n))
SDr
S v J for VE 8J
sect
sn
supp
TxM
r_; M
T (t)
tr or trace
v
v=
v
Vol
w
w k,
w k,p
Joe
WMP
NOTATION AND SYMBOLS
ri ght-hand side
scala r , Ricci, and Riemann curvature t ensors
the quadratic Rm# Rm
algebraic curvature operator
a t race of R (of two indices)
n -dimensional Euclidean sp ace
complex sp ecial linear group
real orthogonal group
sp ace of alge braic curvature operators
side bounda ry 8D x (0, T]
se t of support functions of J c ~k at V
sectional curvature
unit radius n-dimensional sphere
support of a function
tange nt sp ace of M at x
cota ngent sp ace of M at x
function satisfying ~; = -
t race
reduce d volume
mock reduce d volume
vector bundle
volume of a ma nifold
P erelman 's entropy functional
Sobolev sp ace of functions with
~ k weak derivatives in L P
sp ace of functions locally in w k,p
weak maximum principle