302

INDEX

r

2 r

208

s2r 202

t

2 r

218

discriminant 178

Reidemeister torsion 213

Simple homotopy theory

The terms simple homotopy equivalence, simple homotopy type, stably free,

5-base, simple equivalence, simple isomorphism, based short exact sequence,

Wh(ir), Whitehead torsion appear first in this book on pp. 22-27; readers un-

familiar with them are referred to Milnor's survey article [M14] for a clear and

readable account.

Algebraic terms

conventions on right and left modules; matrix notation 2

"bar", x, ^Zn(g)g

A ,

fJL

Qk

simple hermitian form

standard plane, hyperbolic form, lagrangian

quadratic form

formation

ui/f, 1 Ur, U Uri & J^r

a (2 x 2 matrix)

£ (matrix)

SU,S'U,TU

RU

the category

2n

categories ifpd, srfb

Group actions

Z2

5

Z2

join (of actions of spheres)

suspension E (of actions of spheres)

tame actions

standard lens space

L(^n~1(N)

On(G)

poly-^/ group

Group cohomology, group rings

(Wh7r)a

Hn(Z2)

(Tate Z2-cohomology)

Hn(G) (Tate G-cohomology)

G = Pontrjagin dual of G

RG,QRG

IG

Rx

= group of units of R

21

44

45

47

48

272

69

59

62

63

63

63

3

35

161,172

195

195-198

200

213

200,280

237

149

152,259

215

222

213

215

215,268