In this paper, we review some of their related properties of derivations on MValgebras and give some characterizations of additive derivations. Then we prove that the fixed point set of Boolean additive derivations an...In this paper, we review some of their related properties of derivations on MValgebras and give some characterizations of additive derivations. Then we prove that the fixed point set of Boolean additive derivations and that of their adjoint derivations are isomorphic.In particular, we prove that every MV-algebra is isomorphic to the direct product of the fixed point set of Boolean additive derivations and that of their adjoint derivations. Finally we show that every Boolean algebra is isomorphic to the algebra of all Boolean additive(implicative)derivations. These results also give the negative answers to two open problems, which were proposed in [Fuzzy Sets and Systems, 303(2016), 97-113] and [Information Sciences, 178(2008),307-316].展开更多
目的探讨腹腔镜下腹股沟淋巴清扫术治疗外阴癌的临床效果及应用价值。方法回顾性分析该院2012年1月—2017年12月经临床活检确诊的11例外阴癌患者,经腹腔镜腹股沟淋巴结清扫及外阴广泛切除术的临床资料。结果 11例患者均在腹腔镜下完成...目的探讨腹腔镜下腹股沟淋巴清扫术治疗外阴癌的临床效果及应用价值。方法回顾性分析该院2012年1月—2017年12月经临床活检确诊的11例外阴癌患者,经腹腔镜腹股沟淋巴结清扫及外阴广泛切除术的临床资料。结果 11例患者均在腹腔镜下完成双侧腹股沟淋巴结清扫术,平均手术时间(87.5±15.7)min,术中出血量均小于10 m L,平均切除单侧腹股沟淋巴结(8.4±2.3)枚,术中术后无并发症。结论腹腔镜腹股沟淋巴结清扫术治疗外阴浸润癌安全、可靠、手术创伤小、术后切口愈合佳,不易发生腹股沟区皮肤缺血坏死及下肢静脉回流障碍,较常规开放性手术具有明显优势。展开更多
基金Supported by a grant of National Natural Science Foundation of China(12001243,61976244,12171294,11961016)the Natural Science Basic Research Plan in Shaanxi Province of China(2020JQ-762,2021JQ-580)。
文摘In this paper, we review some of their related properties of derivations on MValgebras and give some characterizations of additive derivations. Then we prove that the fixed point set of Boolean additive derivations and that of their adjoint derivations are isomorphic.In particular, we prove that every MV-algebra is isomorphic to the direct product of the fixed point set of Boolean additive derivations and that of their adjoint derivations. Finally we show that every Boolean algebra is isomorphic to the algebra of all Boolean additive(implicative)derivations. These results also give the negative answers to two open problems, which were proposed in [Fuzzy Sets and Systems, 303(2016), 97-113] and [Information Sciences, 178(2008),307-316].
文摘目的探讨腹腔镜下腹股沟淋巴清扫术治疗外阴癌的临床效果及应用价值。方法回顾性分析该院2012年1月—2017年12月经临床活检确诊的11例外阴癌患者,经腹腔镜腹股沟淋巴结清扫及外阴广泛切除术的临床资料。结果 11例患者均在腹腔镜下完成双侧腹股沟淋巴结清扫术,平均手术时间(87.5±15.7)min,术中出血量均小于10 m L,平均切除单侧腹股沟淋巴结(8.4±2.3)枚,术中术后无并发症。结论腹腔镜腹股沟淋巴结清扫术治疗外阴浸润癌安全、可靠、手术创伤小、术后切口愈合佳,不易发生腹股沟区皮肤缺血坏死及下肢静脉回流障碍,较常规开放性手术具有明显优势。