The Clockwork Rocket (Orthogonal, #1), The Eternal Flame (Orthogonal, #2), The Arrows of Time (Orthogonal #3), and The Orthogonal Trilogy (Orthogonal #). The Orthogonal Universe gets its name from the trilogy set in it. It’s a universe with a consequences). It’s extensively documented on Greg Egan’s homepage. More details at · share| improve this answer. answered Jul 17 ’16 at Greg Egan.

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Other books in the series.

Egwn latter is mostly accomplished again, in Egan’s signature style by having a few scientifically-inclined Mr. Prompted by Stuart’s recent frustration with the admittedly ridiculous word count of Reynolds’ most famous series, I resolved to see what Egan had done with the form.

Suffice it to say that the world where Orthogonal happens is rather carefully thought out. So when I read about his planned new series that takes place in a “Riemannian universe”, one where the metric – the math concept that encodes the basic physics of the universe – is positive definite and symmetric in space and time as opposed to the indefinite antisymmetric metric in the Einsteinian universe we seemingly inhabit, I was truly intrigued and indeed The Clockwork Rocket was what I expected and more and so far it is my all around top novel of the year for the combination of sense of wonder, great world building, characters and general “human interest” – the shape-shifting, weird biology aliens of The Clockwork Rocket are both strange and familiar and the story of the main character Yalda is as emotional as any I’ve read this year We get to follow Yalda as she leaves the family farm, and begins to get a proper university education Orthogonal is a science fiction trilogy by Australian author Greg Egan taking place in a universe where, rather than three dimensions of space and one of time, there are four fundamentally identical dimensions.


Orthogonal (series) – Wikipedia

Because in Sophie’s World you had the context dgan understanding more as a basis to build on. Some of this is simply down to Egan being Egan but, going by the afterword, there’s also a specific issue that he takes with a famous Tegmark paper page 19 of the PDF, mildly spoilery as it pertains to unphysical properties of elliptic partial differential equations I’m not kidding and which seems to have gotten wound up too deeply in the plot too early during the book’s conception for the issue to be elided assuming Egan would have been willing to listen wgan reason in the first place.

And grfg that’s the case, all the weird biology stuff is a distraction. Search SoC Search for: Super conflicted about this book.

I read enough of the latter to get the gist of the premise underlying this universe, and launched straight into the story. Open Preview See a Problem? I want to bone up pretty seriously and read this again, someday. After a while I decided that I could live with that, and then it was OK.

On Yalda’s world, plants make food by emitting their own light into the dark night sky. I’m not in a hurry to read the next ones.

If the structure introduces a problem, it is that there is a colossal amount of world-building to communicate. So what is Orthogonal about?

Orthogonal Universe

orthogonap That said, it was an interesting read with an interesting female alien protagonist. However, you can have a finite universe with the topology of a 4-sphere but negative curvature.

This set of rules determines the structure of light, energy, matter, chemistry and everything physical. There’s little room for cultural things like art, music, or literature in the Orthogonal universe.

The Clockwork Rocket

Much of the egna centers on Yalda and her friends pondering physics, time and space, and working out many equations and calculations. Also, if you’re about to raise issues with the physics – don’t. Dec 18, Kate Sherrod rated it it was amazing Shelves: And all of this, all of this normal way of being, is off balance right from the start by the main character Yalda, because she is ogthogonal single: Then Egan assumes that one will understand all the puzzling science he wants to explore without the convenient sieving.


Why not five stars? It becomes apparent that her world is in ortbogonal danger — and that the task of dealing with the Hurtlers will require knowledge and technology far beyond anything her civilisation has yet achieved. His support for the European Egaj as a platform to unify the class struggle across the continent has earned him plenty of strong opposition, and doubtless will continue to do so; until, that is, his view is vindicated by history.

There are a lot of interesting repercussions orthogpnal this form of procreation. Greg Egan has a great imagination. Some of the physics left me reeling, but a more superficial understanding does not detract from enjoyment of the story, which is large enough in scope, and exotic enough in execution, to satisfy any lover of physics based-space opera.

In that orthogonao, the topology doesn’t have the extra fermionic modes, and the overall vacuum energy is positive, which, in this kind of universe, requires space to be negatively curved. This novel follows the familiar formula that Egan fans delight in: Yalda particularly, is a bit too righteous, and would have been much more interesting with some dramatic flaw or dark angle.

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