Double-headed negation in Santome

A double-headed polyp

A 50-year-old man was seen as an outpatient for isolated, minimal and intermittent lower gastrointestinal bleeding. He had a history of well-controlled hypertension and diabetes. During his colonoscopy, a polyp with two heads that shared a common long and large stalk was encountered in the sigmoid colon (Fig. 1A). The heads were approximately 2 cm and 3 cm in size. Because of their overall size...

A Double-Headed Monster

A Double-Headed Monster

A double-headed monster was born in the Railway Hospital, Samastipur, on 5th July, 1948. It is an interesting case because of its rarity; the photograph (plate XXII) tells its own story. Dr. Mody, in his jurisprudence, gives a picture of such monster without any detail. The woman was a sweeper by caste, second para, and fairly well built. She came to hospital in a precarious condition, having b...

Negation and Double-Negation of Chinese Oppositeness

Oppositeness refers to the paradigmatic relationship of two words holding the contrast meanings. The fact that linguistic opposite differs from logical contrast has been discussed in theories, but has not been tested in practice. In this paper, we investigate three main subtypes of Chinese oppositeness, via using logical tests of negation and double-negation. Result shows that purely logical te...

Ultrasheaves and Double Negation

Moerdijk has introduced a topos of sheaves on a category of lters. Following his suggestion, we prove that its double negation subtopos is the topos of sheaves on the subcategory of ultra lters the ultrasheaves. We then use this result to establish a double negation translation of results between the topos of ultrasheaves and the topos on lters. 2000 Mathematics Subject Classi cation. Primary 0...