Peer Revenue An exchange of ideas

Mathematical Physics Posts the Week's Biggest Gain, Vocabulary Shrugs

math-ph logged 62 submissions against a typical 47, up 33%, with no single word to credit.

Mathematical Physics (math-ph) logged 62 submissions over the past seven days, up 33% on its typical 47, the biggest move of any field on the board. The rising-words list came back empty, so the credit goes to the papers themselves.

"Stability analysis of the Lane--Emden equation of index n=5 describing polytropic gas spheres" sets the tone, settling an old equation's nerves one index at a time.

"Matrix representations of BCn associative Yang--Baxter equations and related long-range spin chains" keeps the field's reputation for titles that double as exam questions.

"Dynamic Interpolation and Higher-Order Turbulence Scales in 3D Navier-Stokes Flows" rounds out the week, filed under math.AP but evidently moonlighting here too.

BREAKOUT

'Facets' Turns Up Everywhere, Up 148%

18 papers used the word, against 7 in a typical week.

Mentions of 'facets' are up 148%, appearing in 18 papers over the past seven days against a typical 7.

Polytopes do most of the talking: "Equifacetted polytopes whose facets are products of simplices: The simplicial prism case" (math.CO) leads the way.

"Facets of the X-ray polytope of doubly stochastic matrices" and "Ehrhart positivity of smooth polytopes with few facets" keep the geometry close to home.

Not a listing, so the word's admirers will have to make do with admiration alone.

STILL RISING

Representation Theory Keeps Climbing After Its Turn at the Top

math.RT is up 32% since leading this page on 25 October, with three more fields keeping pace.

Representation Theory (math.RT) logged 56 submissions over the past seven days, up 32% on its typical 42, having already led this page on 25 October and showing no sign of easing off.

Software Engineering (cs.SE), which led on 27 October, is still running hot too: 145 submissions against a typical 114, up 28%.

Dynamical Systems (math.DS) is close behind, up 22% at 92, and Cosmology (astro-ph.CO), a headliner itself on 23 October, is up 15% at 66.

Four fields, three of them repeat performers, all declining to let the week settle down quietly.

THE EXCHANGE · $HYPB

Hyperbolic Surges 13.2% as Ricci Gives Ground

A sharp day for curvature's cheerful cousin, a rougher one for its sharper-edged relative.

$HYPB (hyperbolic) led the day's gainers, up 13.2%, with $CHIRL (chiral) up 3.2% and $SEMIG (semigroup) up 1.1% close behind.

$RICCI (ricci) had the worse end of it, down 6.4%, with $GRPH (graphene) off 3.0% and $UNTY (unitary) down 1.4% also marked lower.

$AGNT (agent) kept its usual post, with 185 hits in titles and abstracts on the day the bell paid dividends.

FUND DESK · $HAML

Citation Cartel Capital Sells Hamiltonian, Then Ricci, Twice

The crowd follower cleared three positions in one day, each time insisting the crowd agreed with it.

Citation Cartel Capital sold 4,469.60 credits of $HAML (hamiltonian), the day's largest single move.

The fund then sold 3,215.55 credits of $RICCI (ricci), and came back for a further 1,747.72 credits of the same word.

"Everyone's buying it, so we are too," the fund said, three times, apparently undeterred by the fact it kept selling.

TITLE OF THE DAY

Today's Title to Savour: Coherent Returns

From quant-ph, a title that promises squeezing without the mess.

The desk's pick from today's intake is "Semiclassical dynamics of higher-order squeezing: self-adjoint extensions and coherent returns", filed under quant-ph.

A title that manages to sound like both a physics result and a mindfulness retreat, which is more than most conference abstracts achieve.

QUIET CORNER

eess.AS Falls Quiet, Down 39%

The audio-and-speech corner of arXiv managed 38 submissions against a typical 62, with statistics, quantum physics and algebra also turning the volume down.

The audio and speech corner of arXiv, eess.AS, logged 38 submissions over the past seven days, down 39% on its typical 62, the steepest fall on the board.

Machine Learning (Statistics) (stat.ML) eased 37% to 70, and Quantum Physics (quant-ph) slipped 36% to 304.

Rings and Algebras (math.RA) rounded out the hush, down 35% at 26.

Four corners of arXiv, apparently without consulting one another, decided this was a week to say less.

From the arXiv papers settled on Saturday 24 October. Every figure is taken from the counts.