Too Many Languages in the ALPPS

Too many languages satisfy Ogden's Lemma

There are various pumping lemmata for context free languages, the strongest of which is Ogden’s Lemma. It is known that it does not fully characterize context free languages. In an attempt to remedy the situation, Manaster– Ramer, Moshier and Zeitman have strengthened this lemma. As we shall show here, there exist non–semilinear languages that satisfy this stronger lemma and also the lesser kno...

How many "me-too" drugs is too many?

ON AUGUST 3, 2009, THE US FOOD AND DRUG ADministration (FDA) approved pitavastatin (Livalo), making it the eighth statin approved for use in the United States and seventh currently available for sale. This approval comes almost a quarter century after that for the first member of the class, lovastatin, 8 years after generic lovastatin was approved and 4 years after 2 additional statins, pravast...

Therapeutic cytapheresis: too many platelets, too many white blood cells.

Myeloproliferative disorders may present with thrombocytosis and/or leukocytosis with symptoms ranging from minor to life-threatening. Therapeutic cytapheresis (TC), the removal of excess and/or abnormal cells such as platelets and white blood cells, can be used to rapidly reduce cells in the symptomatic patient. The patient's clinical status determines the need for TC as symptoms may not corre...

Too few physicians, or too many?

Rate Changes – Too many or too few ?