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The NF-operator and the NF-Numbers of Simplicial Complexes
arXiv:2605.30781v1 Announce Type: cross Abstract: Let $\bigtriangleup$ be a simplicial complex and let $\delta_{\mathcal{NF}}$ denote the NF-operator. The NF-complex $\delta_{\mathcal{NF}}(\bigtriangleup)$ is defined as the Stanley--Reisner complex of the facet ideal of $\bigtriangleup$. Iterating $\delta_{\mathcal{NF}}$ gives a periodic orbit (up to isomorphism), and the smallest positive integer $t$ for which $\delta_{\mathcal{NF}}^{\,t}(\bigtriangleup)\cong \bigtriangleup$ is called the...
30 gallons of fuel spilled onto the National Mall from generators at recent Trump-backed America 250 event: report
30 gallons of fuel spilled onto the National Mall from generators at recent Trump-backed America 250 event: report Environmental remediation team was seen at the sight of the fuel spill Monday, according to NBC News - Bookmark - CommentsGo to comments More than 30 gallons of fuel reportedly leaked onto the National Mall and seeped into underground water reservoirs in Washington, D.C., last month during an event celebrating America’s 250th anniversary, organized by a Trump...
30 gallons of fuel spilled on National Mall after event for America’s 250th birthday
WASHINGTON – More than 30 gallons of fuel spilled onto the National Mall from generators that were used during a recent event celebrating America’s 250th anniversary that was organized by Freedom 250, a group created by the Trump administration, according to three people familiar with the matter. The fuel from commercial generators at the May 17 event seeped into underground cisterns that collect rainwater for the purposes of irrigating the Mall, these people said. Four of these cisterns,...
30 gallons of fuel spilled on National Mall after event for America’s 250th birthday
WASHINGTON – More than 30 gallons of fuel spilled onto the National Mall from generators that were used during a recent event celebrating America’s 250th anniversary that was organized by Freedom 250, a group created by the Trump administration, according to three people familiar with the matter. The fuel from commercial generators at the May 17 event seeped into underground cisterns that collect rainwater for the purposes of irrigating the Mall, these people said. Four of these cisterns,...
Germany's Iran war lessons after 100 days
Germany's Iran war lessons after 100 days June 5, 2026German Chancellor Friedrich Merz initially appeared taken aback by the US and Israel's attack on Iran on February 28. The first strikes killed key figures in the Iranian leadership, including the spiritual leader Ayatollah Ali Khamenei, as well as numerous civilians. No prominent legal scholar has since claimed that these attacks are covered by international law, nor has any member of the German federal government.
Freedom 250: Who’s in and out after several artists drop Trump’s concert event
Freedom 250: Who’s in and out after several artists drop Trump’s concert event “The Great American State Fair” is a series of concerts, exhibits, tributes and other programs scheduled to take place June 25 to July 10 on Washington’s National Mall - Bookmark - CommentsGo to comments “The Great American State Fair” is a series of concerts, exhibits, tributes and other programs scheduled to take place June 25 to July 10 on Washington’s National Mall. It was organized by Freedom 250, which is...