Daniel Biss

Daniel Biss: The Prodigy Who Changed Careers

In February 2017 the journal *Topology and its Applications* retracted a paper it had published fifteen years earlier. The notice was unusually blunt: the definitions were "ambiguous" and "most results are false." The author was by then a state senator in Illinois, and he did not contest it. "I'm just not in a position to evaluate it," Daniel Biss told a reporter. "I'm not in academia." It was a strange moment in an already strange career — a former Clay Research Fellow, once among the most decorated young mathematicians in America, calmly declining to defend his own theorem because he had moved on to writing pension law.

A Musical House in Bloomington

He was born Daniel Kálmán Biss on 27 August 1977 and grew up in Bloomington, Indiana, in a household organised around performance rather than proof. His mother is the violinist Miriam Fried; his brother is the pianist Jonathan Biss; his paternal grandmother was the cellist Raya Garbousova. Biss went a different way. At Bloomington North High School he was named a finalist in the 1995 Westinghouse Science Talent Search, the country's premier high-school science competition.

The Fast Track

What followed was as clean an ascent as the American mathematical system permits. Harvard, summa cum laude, in 1998. The Morgan Prize in 1999, awarded annually for the best research by an undergraduate in the United States. A PhD from MIT in 2002 under Michael J. Hopkins, one of the leading algebraic topologists of the era. Then a Clay Research Fellowship, held from 2002 to 2007 — years of unrestricted funding awarded to a handful of mathematicians worldwide, and among the most coveted early-career appointments in the field. He was a visiting scholar at the Institute for Advanced Study in autumn 2003 and an assistant professor at the University of Chicago from 2002.

He was in his mid-twenties, and the profession had already told him, by every mechanism it possesses, that he was exceptional.

The Errors

Then the work started coming apart. The Russian mathematician Nikolai Mnëv examined two of Biss's papers — published in *Inventiones Mathematicae* and the *Annals of Mathematics*, two of the most selective journals in the discipline — and identified a flaw that, in Mnëv's assessment, destroyed the main theorems of both. Biss accepted the finding and published corrections in 2008 and 2009.

The 2017 retraction was worse. The paper, "The topological fundamental group and generalized covering spaces," had been published in 2002 and cited twenty-seven times; the editors, prompted by a complaint and independent reviews, identified twelve specific errors and concluded that most of its results were false. They were careful to add that the findings were inaccurate rather than fraudulent — an important distinction, and one the mathematical community accepted. But there is no soft way to read the record: a mathematician with the Morgan Prize, a Clay Fellowship and papers in *Annals* and *Inventiones* had produced work that did not survive scrutiny.

By then he had left. Biss's last year on the Chicago faculty was 2008.

Springfield

The exit was not a retreat. Biss says he became politically active at twenty-five, opposing the Iraq War and organising for progressive candidates, and by 2008 he was running for the Illinois House. He lost. He ran again in 2010 and won, serving the 17th district from 2011, then moved up to the Illinois Senate in 2012, holding the 9th district seat until 2019.

His legislative record has two halves. He supported the legalisation of same-sex marriage in 2013, and worked on abortion rights, retirement savings for workers without employer plans, and data-privacy protections. He also, in 2013, supported the pension-reduction legislation that Illinois public employees regarded as a betrayal — a position he has since publicly called a mistake. That reversal became the defining test of his political character, and he chose candour over silence, which cost him with some voters and earned him others.

In 2018 he ran for governor of Illinois as the progressive alternative to a billionaire. He finished second to JB Pritzker with roughly 27 per cent of the primary vote.

Evanston

Losing statewide sent him local. He was elected mayor of Evanston in February 2021 by a decisive margin and re-elected in April 2025 with 62.7 per cent. Evanston under Biss became a laboratory for the things he had argued for in Springfield: municipal campaign finance reform; a Healthy Buildings Ordinance, the first in Illinois, targeting carbon emissions from existing structures; and the C.A.R.E. programme, which dispatches social workers rather than police to low-risk calls and has handled more than 1,500 incidents.

Not everything landed. Envision Evanston, his comprehensive plan to increase housing density, drew substantial community backlash — the standard fate of any American mayor who tells homeowners the zoning must change. In January 2026 Republican legislators questioned his handling of the 2024 pro-Palestinian protests at Northwestern University, which sits in his city; he defended his approach as respecting the right to peaceful assembly.

Washington

In May 2025 Biss announced a run for Illinois's 9th congressional district, the seat Jan Schakowsky was vacating after decades. On 17 March 2026 he won the Democratic primary with 29.6 per cent in a crowded field, defeating the journalist Kat Abughazaleh and state senator Laura Fine.

Why Daniel Is Called a Genius

The credentials are not in dispute and they are extraordinary: Westinghouse finalist at seventeen, Harvard summa, the Morgan Prize for the best undergraduate research in the country, a doctorate under Michael Hopkins, a Clay Research Fellowship — an award given to a handful of people a year worldwide. Every gatekeeping institution in American mathematics independently certified him, and nobody hands out a Clay Fellowship for diligence.

An honest account cannot stop there, because the mathematical record has a hole in it. Two papers in the discipline's most selective journals required corrections after Mnëv found an error fatal to their main theorems. A third was retracted outright in 2017, the editors stating that most of its results were false. They judged this inaccuracy rather than fraud, and the distinction matters enormously — Biss made mistakes, he did not fabricate. But early work that does not survive is exactly what the word "genius" is supposed to rule out. The most defensible reading is of a very fast, very fluent mind that outran its own verification, in a field where being right is the only currency.

What he has done since is a different test, and the results are steadier: a legislator who publicly recanted a vote, a mayor who passed a first-in-state climate ordinance and a police-alternative crisis programme, and a candidate who has now won a congressional primary. That is competence and conviction rather than brilliance. He may prove a more consequential politician than he ever was a mathematician — an odd fate for a Clay Fellow, and not a diminishing one.

Legacy

Biss's story is most useful as a case study in what the certification of talent can and cannot guarantee. The system identified him correctly as unusually able and incorrectly as unusually reliable, and the difference took fifteen years and one retraction notice to surface. He is now something rarer than a prodigy: a serious quantitative mind inside American electoral politics, which contains very few of them. The C.A.R.E. programme and the Healthy Buildings Ordinance are the sort of small, replicable municipal machinery that other cities copy without knowing who built it — a legacy considerably more durable than a theorem that turned out to be false.

Achievements

• Morgan Prize — 1998
• Held posts at University of Chicago
• Fields: number theory