House of
stairs
lithograph, 1951, 47 x 24 cm

Now comes a
further developement of the concept of relativity
that was displayed in the foregoing prints. A playful
element is introducedm one which came up for
discussion in connection with the regular dividing-up
of surfaces, in other words glide reflection. Roughly
the whole of the top half of the print is the mirror
image of the bottom half. The topmost flight of steps,
down which a curl-up is crawling from left to right,
is reflected twice over, once in the middle and then
again in the loer part. On the stairs in the top
right-hand corner, in the same way as is also shown
in number 67, the distinction between ascending and
descending is eliminated, for two rows of animals are
moving side by side, yet one row is going up and the
other down.
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