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Description
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
Der Text behandelt eine Serie von Vorträgen über die Realexistenz einer vierten Dimension, mit Schwerpunkt auf der Geometrie vierdimensionaler Körper. Der zweite Teil umfasst Fragen zu projektiver Geometrie, Lichtgeschwindigkeit, fließenden Geometrien, Zahlenarten und insbesondere zur Relativitätstheorie von Albert Einstein.
von Rudolf Steiner
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4.5 ★★★★★
Based on 1543 reviews
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Product Reviews
★★★★★ 5
Great everyday sneaker
Size: 1 Little Kid, Color: Fuchsia
I bought these for my kid and honestly didn’t expect to like them as much as I do, but they’ve been great so far. They’re lightweight, easy to get on, look cute, fit well, and actually seem comfortable enough that there’s been zero complaining (which is saying a lot).
The grip on the bottom is solid, and they’ve held up really well with everyday wear, running around, playground, all of it. I also like that they’re breathable, so no sweaty feet at the end of the day.
They’re not the most “fancy” sneaker out there, but for the price, the quality feels really fair. If anything, I wish they came in even more color options because we’d probably buy another pair.
Overall, really good everyday shoe. If you just need something reliable, comfortable, and kid-proof, these definitely do the job.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
You've Found Your Daughter's Match! Superior Sneakers for Girls!
Size: 1 Little Kid, Color: Fuchsia, Size: 1 Little Kid, Color: Fuchsia
Super-cute, stylish sneakers meet cushiony comfort at a very reasonable price. These sneakers have it all!
The bed and sole of these sneakers provide significant shock-absorption making them ideal for serious athletics or a long day out at the theme park. Our daughter went from a Keds-type sneaker to these and she was beaming 😁!
In addition to their comfort and ppearance is the fact that they fasten and unfasten with ease. Any child can put them on and take them off. The laces stretch and the Velcro is highly adjustable. Everything has been constructed with integrity.
They are, also, washable so you can continue to maintain their crisp, vibrant colors and keep them looking new.
They fit true-to-size and can accodimate somewhat wide feet as well.
There are only positive things to say about these 5+ stars!
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Nice, Tough & Comfortable!
Size: 6.5 Wide Big Kid, Color: Black
Bought as an everyday school shoe for my 10 year old son. He likes them a lot and is holding up great through rough boy play, and they still look good after a couple months now.
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Reviewed in the United States on January 20, 2026
★★★★★ 5
Great
Size: 4.5 Big Kid, Color: Pink/Purple
perfect
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Pink and purple perfection
Size: 13 Little Kid, Color: Pink/Purple, Size: 13 Little Kid, Color: Pink/Purple
Fits great and perfect colors for my (not so) little. This is her first pair of "tie" shoes so we're still learning, but the laces are a good length for teaching and practicing. She says they're very comfortable too.
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Reviewed in the United States on March 27, 2026
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