Yes, Larson's model was 6-dimensional: a 3-D space with a reciprocally related 3-D time. However, it involved some novel concepts like "scalar motion" and was based on Euclidean geometry. In Larson's system, "directions" are primarily magnitudes (scalar quantities), not our notion of vectors.
Here's a collection of multi-dimensional time theories:
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Yes, Larson's model was 6-dimensional: a 3-D space with a reciprocally related 3-D time. However, it involved some novel concepts like "scalar motion" and was based on Euclidean geometry. In Larson's system, "directions" are primarily magnitudes (scalar quantities), not our notion of vectors.
Here's a collection of multi-dimensional time theories:
http://forum.physorg.com/index.php?showtopic=5522