Majorization & Polymatroids | The Leisure of the Theory

The majorization relationship arises frequently in Economic applications, most recently in the context of information design (see Kleiner, Moldovanu and Strack (2021) for instance). This post highlights the connection between optimization problems involving the majorization relationship and polymatroid optimization problems.

The majorization relationship is a partial order on vectors. If x is an n-vector, denote the j^th largest component by x_[j].  Let

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Online Renewal of U.S. Passports Reopens for a Limited Time

At 11am Eastern time Friday morning, the U.S. State Department reopened applications for online renewal of passports and passport cards.

As Frommer’s reported earlier this summer, last year the Biden Administration gave the green light to the State Department to build a system that allows for online renewal of passports.

The system is already well into testing. After making it

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Music Medleys Reveal 2022 Hardly Strictly Bluegrass Lineup

Hardly Strictly Bluegrass 2022 takes place in Golden Gate Park from September 30th – October 2nd. Per tradition, organizers of the three-day festival have been releasing a series of music medleys as a gradual reveal of the artists who will be performing across six stages.


Update on September 13th: Hardly Strictly Bluegrass (HSB) today announced release our full lineup

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Cruising Beyond With Celebrity | Porthole Cruise and Travel

Picturesque words like beautiful, chic and artistic compel verification when bandied about in cruise jargon. With no hesitation the new Celebrity Beyond has made her inaugural splash into the waters of cruising and with undeniable credibility checks all the boxes.

This latest addition to the Celebrity fleet proudly sailed out of Southampton, England for the first time April 27th, flaunting

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State lawmaker to cities: Lift ban on cruising and celebrate

A statewide movement to end cruising bans moves to the state Capitol Monday and lowrider groups from across California, including National City, are sending a collective message to lawmakers: repeal decades-old cruise bans.

The groups have submitted letters in support of an Assembly resolution that urges municipalities with anti-cruise ordinances to lift the bans and work with local car clubs

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