Eric Rothstein Morris, Paolo Dini, Chrystopher L. Nehaniv, Daniel Schreckling, Attila Egri-Nagy
seen from South Korea
seen from China
seen from Thailand
seen from China

seen from United States
seen from United States
seen from China
seen from China

seen from United States
seen from United States
seen from United States

seen from Malaysia
seen from United States
seen from China
seen from Sri Lanka

seen from Australia
seen from Venezuela
seen from Türkiye
seen from United States

seen from Sri Lanka
Eric Rothstein Morris, Paolo Dini, Chrystopher L. Nehaniv, Daniel Schreckling, Attila Egri-Nagy
Free download Semigroups, Algebras And Operator Theory: Kochi, India, February 2014 written by John Meakin .
∄ inverse
I cheated on you. ∄ way to restore the original pure trust of our early relationship.
The broken glass. Even with glue we couldn't put it back to be the same original glass.
I got old. ∄ potion to restore my lost youth.
Adam & Eve ate from the tree of the knowledge of good & evil. They could not unlearn what they learned.
“Be ... careful what you put in that head because you will never, ever get it out.” ― Thomas Cardinal Wolsey
We polluted the lake with our sewage runoff. The algal blooms choked off the fish. ∄ way to restore it.
Phase change. And the phase boundary can only be traversed one direction (or the backwards direction costs vastly more energy). The marble rolls off the table, the leg poisoned by gangrene. The father dies at war. The unkind words can't be unsaid.
#semigroups