Projection: Difference between revisions

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===The mapping===
===The mapping===


To obtain (some form of) the mapping from a projection, find its comma basis per the above, then take the antinullspace of that comma basis to get the mapping. For more information, see [[Dave Keenan & Douglas Blumeyer's guide to RTT: exploring temperaments#Antinullspace]].
To obtain (some form of) the mapping from a projection, find its comma basis per the above, then take the nullspace of that comma basis to get the mapping. For more information, see [[Dave Keenan & Douglas Blumeyer's guide to RTT: exploring temperaments#Nullspace]].




<math>M = \text{antinullspace}(\text{nullspace}(P))</math>
<math>M = \text{nullspace}(\text{nullspace}(P))</math>




In other words, it's just a nullspace, then an antinullspace.  
In other words, do a double nullspace.


===The generator embedding===
===The generator embedding===