Manuscript IX-Free@1 · IX-Free.tex · section · 33b20e96

Actual stages and the domain diagram

Contract, inherited inputs, and domains › Actual stages and the domain diagram · lines 445–511

IX-Free@1#eq:diagram

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Let

and set

Define

The direct sums are by actual homogeneous field degree, four and two. The underlying spaces coincide, but their ordered roles differ.

All presentation tensor products are algebraic. Put

and define

The factorization diagram is

where or . There is a reversed diagram on the right. The dashed arrow exists exactly when the labelled prescription annihilates the displayed relation space.

Overlap conditions occur inside , on

No presentation map is assumed to be a topological quotient.

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