Die vierte Dimension. Mathematik und Wirklichkeit.

Die vierte Dimension. Mathematik und Wirklichkeit.

Marsoni

M251S

$49.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Die vierte Dimension. Mathematik und Wirklichkeit.Der Text behandelt eine Serie von Vortrgen ber die Realexistenz einer vierten Dimension, mit Schwerpunkt auf der Geometrie vierdimensionaler Krper. Der zweite Teil umfasst Fragen zu projektiver Geometrie, Lichtgeschwindigkeit, flieenden Geometrien, Zahlenarten und insbesondere zur Relativittstheorie von Albert Einstein. von Rudolf Steiner

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Great pillow. When i opened it, i noticed a strange smell, i assumed its the smell of whatever they use to make the pillow stay cool. You have to fluff it for a good amount of time to make sure the cooling agent spreads well in the foam. Is what i assumed atleast. Its a perfect amount of softness for me. Pair it with some bamboo pillow cases and you got a good night of sleep

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Reviewed in the United States on May 9, 2026

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Kim Groetsch

Massapequa, US

★★★★★ 5

BEST, MOST COMFORTABLE PILLOWS EVER!

Color: White-cooling Basic, Size: Queen(Pack of 2)

I've used others.BEST PILLOWS EVER! Firm, cooling and supportive. LOVE THESE!

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Reviewed in the United States on May 28, 2026

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Juanita

Cuba, US

★★★★★ 4

Comfortable and Supportive, but Adjust the Filling

Color: White-cooling Basic, Size: Queen(Pack of 2), Color: White-cooling Basic, Size: Queen(Pack of 2)

I’m very happy with this pillow. The size is big and it feels soft while still providing good support, perfect for midnight scrolling on TikTok. One thing to keep in mind is that it can feel a little too tall if you use all of the filling that comes with it. The good news is that you can easily adjust the amount of filling to find the height that works best for your sleeping position. Once I customized it, it was much more comfortable. Overall, great quality, comfortable, and worth the purchase.

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Reviewed in the United States on June 3, 2026