نتایج جستجو برای: keratosis pilaris atrophicans
تعداد نتایج: 4023 فیلتر نتایج به سال:
We consider N-soliton solutions of the KP equation, (−4ut + uxxx + 6uux)x + 3uyy = 0 . An N-soliton solution is a solution u(x, y, t) which has the same set of N line soliton solutions in both asymptotics y → ∞ and y → −∞. The Nsoliton solutions include all possible resonant interactions among those line solitons. We then classify those N-soliton solutions by defining a pair of Nnumbers (n,n) w...
The p × p matrix version of the r-KdV hierarchy has been recently treated as the reduced system arising in a Drinfeld-Sokolov type Hamiltonian symmetry reduction applied to a Poisson submanifold in the dual of the Lie algebra ĝlpr ⊗CI [λ, λ]. Here a series of extensions of this matrix Gelfand-Dickey system is derived by means of a generalized Drinfeld-Sokolov reduction defined for the Lie algeb...
We study the conformal properties of the multi-constraint KP hierarchy and its nonstandard partner by covariantizing their corresponding Lax operators. The associated second Hamiltonian structures turn out to be nonlocal extension of Wn algebra by some integer or half-integer spin fields depending on the order of the Lax operators. In particular, we show that the complicated second Hamiltonian ...
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Department of Mathematics, Brandeis University, Waltham, Mass 02254, USA. Email: [email protected]. The support of a National Science Foundation grant # DMS-9503246 is gratefully acknowledged. Department of Mathematics, Kyoto University, Kyoto 606, Japan. The hospitality of the University of Louvain and Brandeis University is gratefully acknowledged. Department of Mathematics, Université ...
Over the past decade, the intimate relationships between matrix integrals and nonlinear integrable systems have been clarified, particularly in the context of string theory. In such cases, nonperturbative properties of physical quantities can be evaluated by the use of the integrable structures of the models. (For review, see refs. 1-4.) Here, we consider a matrix integral over an ensemble of H...
Keratosis follicularis spinulosa decalvans (KFSD) is a hereditary disorder of the hair follicle which presents with scarring alopecia and follicular papules affecting the scalp and other areas of the body. Being X-linked it is more common in males but rarely, can be seen in females. We report this rare disorder in siblings affecting both male and female child. Key-wordsKeratosis follicularis sp...
Pityriasis Rubra Pilaris (PRP) is a chronic and rare papulosquamous disorder. Treatment of Pityriasis Rubra Pilaris is based on empiric evidence because of several doubts regarding its etiology and also because of its relative rarity, making randomized studies difficult to perform. Some factors suggest that the metabolism of vitamin A is involved in pathogenesis. We report a case of Pityriasis ...
Pityriasis rubra pilaris (PRP) is a rare, chronic erythematous squamous disorder of unknown etiology. It has been found in association with several autoimmune diseases, including thyroiditis, myositis, myasthenia gravis and vitiligo. Herein we report a case of systemic sclerosis in a patient with classic adult pityriasis rubra pilaris. A 38 year old woman with classic adult type 1 pityriasis ru...
Pityriasis rubra pilaris is a rare inflammatory disorder characterized by follicular papules on an erythematous base often exhibiting islands of unaffected skin, follicular plugging, and palmoplantar hyperkeratosis. While vitamin A deficiency and autoimmune reactions have been hypothesized as possible etiologies of this condition, pityriasis rubra pilaris-like eruptions secondary to medications...
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