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Description
A Mathematical Companion to Quantum MechanicsThis original 2019 work, based on the author's many years of teaching at Harvard University, examines mathematical methods of value and importance to advanced undergraduates and graduate students studying quantum mechanics. Its intended audience is students of mathematics at the senor university level and beginning graduate students in mathematics and physics. Early chapters address such topics as the Fourier transform, the spectral theorem for
This original 2019 work, based on the author's many years of teaching at Harvard University, examines mathematical methods of value and importance to advanced undergraduates and graduate students studying quantum mechanics. Its intended audience is students of mathematics at the senor university level and beginning graduate students in mathematics and physics.Early chapters address such topics as the Fourier transform, the spectral theorem for bounded self-joint operators, and unbounded operators and semigroups. Subsequent topics include a discussion of Weyl's theorem on the essential spectrum and some of its applications, the Rayleigh-Ritz method, one-dimensional quantum mechanics, Ruelle's theorem, scattering theory, Huygens' principle, and many other subjects.
Binding Type: Paperback
Publisher: Dover Publications
Published: 03/20/2019
ISBN: 9780486826899
Pages: 336
Weight: 0.90lbs
Size: 8.90h x 6.20w x 0.60d
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★★★★★ 5
Sturdy and Bright!
Number of Items: 2
Sturdy and bright! Great for the driveway
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Reviewed in the United States on February 18, 2026
★★★★★ 1
Extremely Overpriced
Number of Items: 4
It doesn’t hold charge too long , especially if it’s not on a perfectly bright sunny day without clouds. Even at that , It will only be able to light up for maybe two or three hours at best , and not very bright at all. Construction and materials are of good quality that’s why the one start or else zi would gave given a zero if i could. it is way overpriced for what it is. I am disappointed for what I paid and the amount of production I get from it. Would have returned it if I haven’t installed them and threw away the boxes.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Quality enclosure and battery. Looks great.
Number of Items: 4
Quality metal enclosure. Look great. Two color levels. Charge even in indirect sunlight just fine. I have now bought 12 of these lights.
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Reviewed in the United States on November 1, 2025
★★★★★ 5
Very durable and designed to last a long time
Number of Items: 2
I've had a pair of these lights for 7-8 years and would still be using them with no issues if a naughty racoon hadn't taken an interest in them and broken the glass on one of them. I was delighted to find that the identical looking ones (operate slightly differently) were still available.
They are extremely simple to put together (just screw together the durable metal pieces) and turn them on to the chosen brightness. It couldn't be much simpler.
I also have other Gama Sonic solar lights and they are every bit as good.
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Reviewed in the United States on May 4, 2024
★★★★★ 3
Gama lights
Number of Items: 4
3 out of 4 are great. One did not work right away. Company send 2 extra battery packs. But still one bad unit. Talking now about options. Company seems to have good customer service. But bad light definetly an issue. 1 of 4 bad.
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Reviewed in the United States on June 9, 2026