04-03-2019, 06:05 PM
Hi Wladimir,
I agree that the bottom jar in f89r1 may be decomposed into three parts that individually seem to make sense. I may also agree that the overall jar is comparable to the blue one in 89v1; but that blue jar, however complex, is coherent as a 3D object. This one is really special in not simply mappable into a corresponding object.
I would be interested in finding XV century parallels, other examples of messed-up perspective. They might give us some hints on how similar Escher-like illustrations might have been used. I don't expect that any close match exist, but also not-so-close matches could suggest something.
I attach an attempt to clarify my interpretation of the yellow / red-dotted ellipsoid as a cross-section. I am less and less convinced that this might have been the intention of the artist, still this was my initial "reading" of this illustration.
I agree that the bottom jar in f89r1 may be decomposed into three parts that individually seem to make sense. I may also agree that the overall jar is comparable to the blue one in 89v1; but that blue jar, however complex, is coherent as a 3D object. This one is really special in not simply mappable into a corresponding object.
I would be interested in finding XV century parallels, other examples of messed-up perspective. They might give us some hints on how similar Escher-like illustrations might have been used. I don't expect that any close match exist, but also not-so-close matches could suggest something.
I attach an attempt to clarify my interpretation of the yellow / red-dotted ellipsoid as a cross-section. I am less and less convinced that this might have been the intention of the artist, still this was my initial "reading" of this illustration.