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Table 1.

Invariance transformations of Gorenstein et al. (1988).

Name Transformation
Prismatic inv. inv. inv.
Similarity sτ inv. inv.
Magnification ϵτ inv. inv.

Notes. Columns 1 and 2: name and transformation law, Col. 3: change in the time delay difference due to the transformation, Col. 4: change in the relative image positions, Col. 5: change in the magnification ratios; c, s, ϵ ∈ ℝ.

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