論理関数の内包関数と外包関数について
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- Makino Kazuhisa
- Department of Applied Mathematics and physics,Faculty of Engineering,Kyoto University
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- Ibaraki Toshihide
- Department of Applied Mathematics and physics,Faculty of Engineering,Kyoto University
Bibliographic Information
- Other Title
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- Interior and Exterior Functions of Boolean Functions
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Description
本論文では,論理関数fの安定性を考察するためにfの内包関数,外包関数,および,層を定義し,この定義に関連したINTERIOR,EXTERIOR,LAYERの3つの問題を考えます.まず,fを正関数に限定しても,問題LAYERが,NP困難であること,および,P≠NPならば,問題INTERIORとEXTERIORに対する多項式時間アルゴリズムが存在しないことを示しました.しかしながら,2単調正関数においては,問題LAYERが多項式時間で解くことができること,さらに,問題INTERIORとEXTERIORに対する逐次多項式アルゴリズムの存在を示しました.
We define the interior functions,exterior functions and layers of a Boolean function f in order to investigate its stability,and consider three problems INTERIOR,EXTERIOR and LAYER associated with such definitions.We show that even if f is restricted to be a positive function,LAYER is NP-hard and there is no polynomial total time algorithm,unless P=NP,for INTERIOR and EXTERIOR.However, for a 2-monotonic positive function f,LAYER can be solved in polynomial time and there exist incrementally polynomial algorithms for INTERIOR and EXTERIOR.
Journal
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- IEICE technical report. Theoretical foundations of Computing
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IEICE technical report. Theoretical foundations of Computing 94 (88), 21-30, 1994-06-16
The Institute of Electronics, Information and Communication Engineers
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Details 詳細情報について
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- CRID
- 1573387452166654208
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- NII Article ID
- 110003191725
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- NII Book ID
- AN10013152
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- Text Lang
- en
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- Data Source
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- CiNii Articles