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Dowling-Degos 病 1 例 被引量:2
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作者 冉立伟 兰东 贾红侠 《中国皮肤性病学杂志》 CAS 北大核心 2013年第12期1272-1273,1297,共3页
患者女,72岁。褶皱部皮损近50年,伴有时瘙痒。皮肤科情况:皮肤褶皱部位包括颈部、腋窝、乳房下、腹股沟、肛周、外阴,以及指背,可见针头至豌豆大淡褐色、褐色、黑褐色斑疹、斑丘疹、扁平丘疹,可有融合或呈网状分布。皮损组织病理检查示... 患者女,72岁。褶皱部皮损近50年,伴有时瘙痒。皮肤科情况:皮肤褶皱部位包括颈部、腋窝、乳房下、腹股沟、肛周、外阴,以及指背,可见针头至豌豆大淡褐色、褐色、黑褐色斑疹、斑丘疹、扁平丘疹,可有融合或呈网状分布。皮损组织病理检查示:角化过度,棘层轻度肥厚,表皮突明显延长且色素增多,高度相互交织呈花蕾状,可见小的角囊肿及胞浆红染角质形成细胞;真皮浅层较多淋巴组织细胞浸润,有较多噬黑素细胞。诊断:Dowling-Degos病。 展开更多
关键词 dowling—Degos病
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Dowling 格中的第二类Whitney 数
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作者 侯耀平 魏丽娟 《晓庄学院自然科学学报》 CAS 1999年第3期6-10,共5页
给出了Dowling 格中第二类Whitney 数Wm( n,k) 的表达式的一个纯组合的证明,定义并讨论了Dowling 格中的相伴Whitney 数Wrm(n ,k) ,利用Wrm(n ,k) 验证了当k= 1 ,2 ,3 时... 给出了Dowling 格中第二类Whitney 数Wm( n,k) 的表达式的一个纯组合的证明,定义并讨论了Dowling 格中的相伴Whitney 数Wrm(n ,k) ,利用Wrm(n ,k) 验证了当k= 1 ,2 ,3 时,几何格中的顶重猜想对Dowling 格成立. 展开更多
关键词 STIRLING数 Whitney 顶重猜想 dowling
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Some Properties of Degenerate r-Dowling Polynomials and Numbers of the Second Kind
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作者 Hye Kyung Kim Dae Sik Lee 《Computer Modeling in Engineering & Sciences》 SCIE EI 2022年第12期825-842,共18页
The generating functions of special numbers and polynomials have various applications in many fields as well as mathematics and physics.In recent years,some mathematicians have studied degenerate version of them and o... The generating functions of special numbers and polynomials have various applications in many fields as well as mathematics and physics.In recent years,some mathematicians have studied degenerate version of them and obtained many interesting results.With this in mind,in this paper,we introduce the degenerate r-Dowling polynomials and numbers associated with the degenerate r-Whitney numbers of the second kind.We derive many interesting properties and identities for them including generating functions,Dobinski-like formula,integral representations,recurrence relations,differential equation and various explicit expressions.In addition,we explore some expressions for them that can be derived from repeated applications of certain operators to the exponential functions,the derivatives of them and some identities involving them. 展开更多
关键词 dowling lattice Whitney numbers and polynomials r-Whitney numbers and polynomials of the second kind r-Bell polynomials r-Stirling numbers dowling numbers and polynomials
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