Greg Egan

Mathematics In 2002, Egan co-authored two papers about Riemannian 10j symbols, spin networks appearing in Riemannian quantum gravity, together with John Baez and Dan Christensen. Spin networks also play a central role in his novel Schild's Ladder released the same year.

In 2014, Egan conjectured a generalization of the Grace–Danielsson inequality about the relation of the radii of two spheres and the distance of their respective centres to fit a simplex between them to also hold in higher dimensions, which later became known as the Egan conjecture. A proof of the inequality being sufficient was published by him in 2014 under a blog post of John Baez. They were lost due to a rearrangement of the website, but the central parts were copied into the original blog post. Further comments by Greg Egan on 16 April 2018 concern the search for a generalized conjecture involving ellipsoids. A proof of the inequality also being necessary was published by Sergei Drozdov on 16 October 2023 on ArXiv.

In 2018, Egan described a construction of superpermutations, thus giving an upper bound to their minimum length. On 27 February 2019, using ideas developed by Robin Houston and others, Egan produced a superpermutation of seven symbols of length 5906, breaking previous records.

Personal life As of 2015, Egan lives in Perth. He is a vegetarian and an atheist.

Egan does not attend science fiction conventions, does not sign books, and has stated that he appears in no photographs on the web, though both SF fan sites and Google Search have at times mistakenly identified him as the subject of photos of other people with the same name.

Awards Egan's work has won the Japanese Seiun Award for best translated fiction nine times. 1989 Interzone Readers Poll Fiction

1990 Interzone Readers Poll Fiction

1991 BSFA Award Short Fiction 1991 Interzone Readers Poll Fiction 1991 Locus Award Short Story 1995 Hayakawa's S-F Magazine Reader's Award Foreign Short Story 2007 Premio Ignotus Foreign Short Story

1991 BFSA Short Fiction

1991 Interzone Readers Poll Fiction 1991 Locus Award Novelette 1999 Premio Ignotus Foreign Story

1991 Ditmar Award Australian Short Fiction 1991 Asimov's Readers' Poll Novelette

1992 BFSA Short Fiction

1992 Interzone Readers Poll Fiction

1992 Locus Award Short Story 1993 Interzone Readers Poll Fiction

1993 Ditmar Award Short Fiction

1993 Ditmar Award Long Fiction 2000 Premio Ignotus Foreign Novel 2000 Seiun Award Translated Long Work

1993 Asimov's Readers' Poll Novelette 1993 Locus Award Novelette

1993 Asimov's Readers' Poll Short Story

1994 Locus Award Novelette

1994 Otherwise Award 1995 Theodore Sturgeon Award Short Science Fiction 1995 SF Chronicle Award Novelette 1995 Locus Award Novelette 1995 Asimov's Readers' Poll Novelette 1995 Hugo Award Novelette 1995 Ditmar Award Australian Short Fiction

1995 BSFA Award Novel 1995 John W. Campbell Memorial Award Science Fiction Novel 1995 Locus Award SF Novel 1999 Italia Awards International Novel 1999 Premio Ignotus Foreign Novel 2000 Seiun Award Translated Long Work 1995 Ditmar Award Australian Short Fiction 1996 Locus Award Novelette 1996 Hugo Award Novelette 2003 Seiun Award Translated Short Story 2011 Premio Ignotus Foreign Short Story

1995 Aurealis Award Science Fiction Short Story 1996 Locus Award Novelette 2000 Kurd Laßwitz Award Foreign Work 2001 Premio Ignotus Foreign Novel 2005 Seiun Award Translated Long Work

1995 Aurealis Award Science Fiction Short Story 1995 BFSA Award Short Fiction 1999 Premio Ignotus Foreign Story 2003 Hayakawa's S-F Magazine Reader's Award Foreign Short Story

1996 Interzone Readers Poll Fiction 1996 Locus Award Novelette

1996 Locus Award Collection

1997 Grand prix de l'Imaginaire Foreign Short story/Collection of Foreign Short Stories 2001 Kurd Laßwitz Award Foreign Work 2006 Seiun Award Translated Long Work 2010 Premio Ignotus Foreign Novel

1997 Aurealis Award Science Fiction Short Story 1998 Interzone Readers Poll Fiction 1998 Ditmar Award Short Fiction 1998 Locus Award Novelette 2003 Premio Ignotus Foreign Story

1998 Locus Award Short Story 1999 Asimov's Readers' Poll Novella 1999 Locus Award Novella 1999 Hugo Award Novella 2000 Hayakawa's S-F Magazine Reader's Award Foreign Short Story 2001 Seiun Award Translated Short Story 2010 Grand prix de l'Imaginaire Foreign-language Short Fiction

1998 HOMer Award Novelette 1999 Hugo Award Novelette 2000 Ditmar Award Novel 2001 Gaylactic Spectrum Award Novel 2002 Italia Awards International Novel 2002 Kurd Laßwitz Award Foreign Work

2000 Hugo Award Novelette 2000 Locus Award Novelette

2001 Hugo Award Novella 2001 Asimov's Readers' Poll Novella 2001 Locus Award Novella 2001 Gaylactic Spectrum Award Short Fiction

2002 BFSA Award Short Fiction 2003 Locus Award Novella 2003 Theodore Sturgeon Award Short Science Fiction

2003 Prometheus Award SF Novel 2003 Locus Award SF Novel

2007 Premio Ignotus Foreign Story

2008 Hugo Award Novelette 2008 Asimov's Readers' Poll Novelette 2008 Locus Award Novelette 2010 Seiun Award Translated Short Story

2008 Hugo Award Novelette 2009 Interzone Readers Poll Story 2009 Locus Award Novelette 2011 Seiun Award Translated Short Story

2009 Locus Award Novelette 2014 Seiun Award Translated Long Work

2010 Locus Award Collection

2010 Locus Award Novella 2012 Locus Award SF Novel

2011 Locus Award SF Novel 2016 Seiun Award Translated Long Work

2013 Locus Award SF Novel

2014 Locus Award Novelette

2014 Locus Award SF Novel 2017 Seiun Award Translated Short Story

2015 Locus Award Novelette 2016 Theodore Sturgeon Award Short Science Fiction 2016 Asimov's Readers' Poll Novella 2017 Canopus Award Short-Form Fiction

2017 BFSA Award Short Fiction 2020 Seiun Award Translated Short Story

2018 Theodore Sturgeon Award Short Science Fiction

2019 Analog Readers Poll Novelette

2019 Asimov's Readers' Poll Novella

2020 Locus Award Collection

2020 Seiun Award Translated Short Story

2022 Asimov's Readers' Poll Novella

2023 Analog Readers Poll Novelette

2023 Asimov's Readers' Poll Novelette 2023 Locus Award Novelette 2024 Seiun Award Translated Short Story

2025 Seiun Awards Translated Short Story

2026 Seiun Awards Translated Short Story Works Novels An Unusual Angle (1983), Quarantine (1992), Permutation City (1994), Distress (1995), Diaspora (1997), Teranesia (1999), Schild's Ladder (2002), Incandescence (2008), Zendegi (2010), Dichronauts (2017), Perihelion Summer (2019), The Book of All Skies (2021), Scale (2023), Morphotrophic (2024),

Orthogonal trilogy

The Clockwork Rocket (2011), The Eternal Flame (2012), The Arrows of Time (2013),

Collections Axiomatic (1995),

Our Lady of Chernobyl (1995),

Luminous (1998),

Dark Integers and Other Stories (2008),

Crystal Nights and Other Stories (2009),

Oceanic (2009),

The Best of Greg Egan (2019),

Instantiation (2020),

Sleep and the Soul (2023),

Phoresis and Other Journeys (2023),

Other short fiction

Excerpted Diaspora: "Orphanogenesis" in Interzone issue 123, September 1997

Academic papers An Efficient Algorithm for the Riemannian 10j Symbols by Dan Christensen and Greg Egan Asymptotics of 10j Symbols by John Baez, Dan Christensen and Greg Egan Conic-Helical Orbits of Planets around Binary Stars do not Exist by Greg Egan

Short movies The production of a short film inspired by the story "Axiomatic" commenced in 2015, and the film was released online in October 2017.