尊氏再起の寺の本堂か 幕府創設前雌伏「原山無量寺」の遺構
2016年03月15日 03時00分
原遺跡から出土した原山無量寺の本堂の基壇とみられる遺構。壁面の下部には大きな石が残り、それに沿って石の階段跡も見つかった＝福岡県太宰府市
写真を見る
福岡県太宰府市三条の原遺跡で、室町幕府創設前に九州に落ち延びた足利尊氏が身を寄せ、再起を図ったとされる「原山（はらやま）無量寺」（通称・原八坊）の本堂跡とみられる遺構が初めて確認された。市教育委員会が調査していた。これまで古絵図や文献などから同遺跡付近に同寺があったと推定されていたが、今回の発見で寺全体の構造解明が前進しそうだ。
原遺跡は太宰府天満宮から北西約６００メートルの四王寺山南東麓に位置し、過去の調査では僧坊の可能性がある建物遺構などが出土している。今回の調査で建物の基礎となる「基壇」とみられる盛り土の遺構と階段跡が見つかった。
盛り土は高さ最大約２メートル。壁面は石を組んでいたと考えられ、下部に複数の直径１メートル前後の石が確認された。上部の平らな面には建物礎石と推定される石もあった。
盛り土に沿って石の階段（最大幅約５メートル）の遺構も出土。同じ地層から出た白磁や青磁の破片から、盛り土や階段は１３世紀ごろの築造とみられる。土製仏像や五輪塔の破片（ともに５センチ四方程度）も見つかった。
盛り土の規模や石の大きさなどから市教委の中村茂央（しげお）技師は「仏教関連遺物も出ており、本堂跡の可能性が高い」と結論づけた。
同寺は９世紀創建の天台宗の寺院とされ、福岡市博物館所蔵の「原山古代図」（江戸時代）には往時の壮麗な伽藍（がらん）群が描かれている。１４世紀半ばの歴史書「梅松論」には、戦に敗れて九州に下った足利尊氏が「原山」に入った後、再び攻め上って室町幕府を開いたことが記されている。
現地を見た小田富士雄福岡大名誉教授は「大分県国東半島の天台系寺院と同じ伽藍配置のようだが、規模はずっと大きい。力のあった寺の片りんが見える。影が薄かった太宰府の中世に光を当てる発見で、本堂跡の全容解明を期待したい」と話している。
＝2016/03/15付 西日本新聞朝刊＝http://www.nishinippon.co.jp/nnp/culture/article/231420
\title{\bf Announcement 214: Surprising mathematical feelings of a 7 years old girl
}
\author{{\it Institute of Reproducing Kernels}\\
Kawauchi-cho, 5-1648-16,\\
\date{}
\maketitle
{\bf Abstract: } In this announcement, we shall give the two surprising mathematical feelings of 7 years old girl Eko Michiwaki who stated the division by 3 of any angle and the division by zero $100/0=0$ as clear and trivial ones. As well-known, these famous problems are historical, and her results will be quite original.
\bigskip
\section{ Introduction}
We had met, 7 years old girl, Eko Michiwaki on November 23, 2014 at Tokyo Institute of Technology and August 23, 2014 at Kusatu Seminor House, with our colleagues. She, surprisingly enough, stated there repeatedly the division by 3 of any angle and the division by zero $100/0=0$ as clear and trivial ones. As well-known, these famous problems are historical and her results will be quite original.
\section{The division of any angle by 3}
\medskip
Eko Michiwaki said:
divide a given angle with 4 equal angles; this is simly done. Next, we divide one divided angle
with 4 equal angles similarly and the three angles add to other 3 angles. By continuing this procedure, we will be able to obtain the division by 3 of any angle. Her idea may be stated mathematically as follows:
$$
\frac{1}{4} + \frac{1}{4^2} + \frac{1}{4^3} + ... ...= \frac{1}{3}.
$$
However, her idea seems to be more clear than the above mathematical formula. For this sentence, see \cite{ann3} for the sense of the limit.
\bigskip
\section{The division by zero $100/0=0$}
\medskip
As we stated in \cite{ann1}, she stated that division by zero $100/0=0$ is clear and trivial for our recent results \cite{cs,kmsy,s,ttk}. The basic important viewpoint is that division and product are different concepts and the division by zero $100/0=0$ is clear and trivial from the own sense of the division, independently of product \cite{ann1}. From the viewpoint, our colleagues stated as follows:
\medskip
On July 11, 2014, Seiichi Koshiba and Masami Yamane said at
Gunma University:
The idea for the division of Hiroshi Michiwaki and Eko Michiwaki (6 years
old daughter) is that division and product are different concepts and they
were calculated independently for long old years, by repeated addition and
subtraction, respectively. Mathematicians made the serious mistake for very
long years that the division by zero is impossible by considering that division
is the inverse operation of product. The division by zero was, however, clear
and trivial, as z/0=0, from the own nature of division.
\medskip
On February 21, 2015, Seiichi Koshiba and Masami Yamane visited our Institute and we confirmed this meaning of these sentences and the basic idea on the division by zero.
\medskip
(2015.2.27)
\bigskip
\bibliographystyle{plain}
\begin{thebibliography}{10}
\bibitem{cs}
L. P. Castro and S.Saitoh, Fractional functions and their representations, Complex Anal. Oper. Theory {\bf7} (2013), no. 4, 1049-1063.
\bibitem{kmsy}
M. Kuroda, H. Michiwaki, S. Saitoh, and M. Yamane,
New meanings of the division by zero and interpretations on $100/0=0$ and on $0/0=0$,
Int. J. Appl. Math. Vol. 27, No 2 (2014), pp. 191-198, DOI: 10.12732/ijam.v27i2.9.
\bibitem{s}
S. Saitoh, Generalized inversions of Hadamard and tensor products for matrices, Advances inLinear Algebra \& Matrix Theory. Vol.4 No.2 (2014), 87-95.http://www.scirp.org/journal/ALAMT/
\bibitem{ttk}
S.-E. Takahasi, M. Tsukada and Y. Kobayashi, Classification of continuous fractional binary operations on the real and complex fields, Tokyo Journal of Mathematics (in press).
\bibitem{ann1}
Announcement 179: Division by zero is clear as z/0=0 and it is fundamental in mathematics,
Institute of Reproducing Kernels, 2014.10.22.
\bibitem{ann2}
Announcement 185: The importance of the division by zero $z/0=0$, Institute of Reproducing Kernels, 2014.11.28.
\bibitem{ann3}
Announcement 213: An interpretation of the identity $ 0.999999...... =1$, Institute of Reproducing Kernels, 2015.2.26.
\end{thebibliography}
\end{document}
\title{\bf Announcement 213: An interpretation of the identity $ 0.999999...... =1$
}
\author{{\it Institute of Reproducing Kernels}\\
\date{}
\maketitle
{\bf Abstract: } In this announcement, we shall give a very simple interpretation for the identity: $ 0.999999......=1$.
\bigskip
\section{ Introduction}
On January 8, 2008, Yuusuke Maede, 8 years old boy, asked the question, at Gunma University, that (Announcement 9(2007/9/1): Education for genius boys and girls):
What does it mean by the identity:
$$
0.999999......=1?
$$
at the same time, he said: I am most interesting in the structure of large prime numbers. Then, a teacher answered for the question by the popular reason based on the convergence of the series: $0.9, 0.99, 0.999,... $. Its answer seems to be not suitable for the 8 years old boy with his parents (not mathematicians). Our answer seems to have a general interest, and after then, such our answer has not been heard from many mathematicians, indeed.
This is why writting this announcement.
\medskip
\bigskip
\section{An interpretation}
\medskip
In order to see the essence, we shall consider the simplist case:
\begin{equation}
\frac{1}{2} + \frac{1}{2^2} + \frac{1}{2^3} + ... = 1.
\end{equation}
Imagine a tape of one meter length, we will give its half tape: that is,
\begin{equation}
\frac{1}{2}.
\end{equation}
Next, we will give its (the rest's half) half tape; that is, $\frac{1}{2}\cdot \frac{1}{2} = \frac{1}{2^2}$, then you have, altogether
\begin{equation}
\frac{1}{2} + \frac{1}{2^2} .
\end{equation}
Next, we will give the last one's half (the rest's half); that is, $\frac{1}{2}\cdot \frac{1}{2} \cdot \frac{1}{2}= \frac{1}{2^3}$,
then, you have, altogether
\begin{equation}
\frac{1}{2} + \frac{1}{2^2} + \frac{1}{2^3}.
\end{equation}
By this procedure, you will be able to obtain the small tapes endressly. Imagine all the sum as in the left hand side of (2.1). However, we will see that this sum is just the division of the one meter tape. Therefore, we will be able to confim the identity (2.1), clearly.
The question proposed by Y. Maede is just the small change the ratio $\frac{1}{2}$ by $\frac{9}{10}$.
\bigskip
\section{ Conclusion}
Y. Maede asked the true sense of the limit in the series:
$$
0.999999.....
$$
that is, this series is approaching to 1; however, is it equal or not ? The above interpretation means that the infinite series equals to one and it is just the infinite division of one. By this inverse approarch, the question will make clear.
\medskip
\bigskip
\section{Remarks}
Y. Maede stated a conjecture that for any prime number $p$ $( p \geqq 7)$, for $1$ of $ - 1$
\begin{equation}
11111111111
\end{equation}
may be divided by $p$ (2011.2.6.12:00 at University of Aveiro, by skype)
\medskip
(No.81, May 2012(pdf 432kb)
www.jams.or.jp/kaiho/kaiho-81.pdf).
\medskip
This conjecture was proved by Professors L. Castro and Y. Sawano,
independently. Y. Maede gave later an interesting interpretation for his conjecture.
\medskip
(2015.2.26)
\end{document}
2016年03月15日 03時00分
原遺跡から出土した原山無量寺の本堂の基壇とみられる遺構。壁面の下部には大きな石が残り、それに沿って石の階段跡も見つかった＝福岡県太宰府市
写真を見る
福岡県太宰府市三条の原遺跡で、室町幕府創設前に九州に落ち延びた足利尊氏が身を寄せ、再起を図ったとされる「原山（はらやま）無量寺」（通称・原八坊）の本堂跡とみられる遺構が初めて確認された。市教育委員会が調査していた。これまで古絵図や文献などから同遺跡付近に同寺があったと推定されていたが、今回の発見で寺全体の構造解明が前進しそうだ。
原遺跡は太宰府天満宮から北西約６００メートルの四王寺山南東麓に位置し、過去の調査では僧坊の可能性がある建物遺構などが出土している。今回の調査で建物の基礎となる「基壇」とみられる盛り土の遺構と階段跡が見つかった。
盛り土は高さ最大約２メートル。壁面は石を組んでいたと考えられ、下部に複数の直径１メートル前後の石が確認された。上部の平らな面には建物礎石と推定される石もあった。
盛り土に沿って石の階段（最大幅約５メートル）の遺構も出土。同じ地層から出た白磁や青磁の破片から、盛り土や階段は１３世紀ごろの築造とみられる。土製仏像や五輪塔の破片（ともに５センチ四方程度）も見つかった。
盛り土の規模や石の大きさなどから市教委の中村茂央（しげお）技師は「仏教関連遺物も出ており、本堂跡の可能性が高い」と結論づけた。
同寺は９世紀創建の天台宗の寺院とされ、福岡市博物館所蔵の「原山古代図」（江戸時代）には往時の壮麗な伽藍（がらん）群が描かれている。１４世紀半ばの歴史書「梅松論」には、戦に敗れて九州に下った足利尊氏が「原山」に入った後、再び攻め上って室町幕府を開いたことが記されている。
現地を見た小田富士雄福岡大名誉教授は「大分県国東半島の天台系寺院と同じ伽藍配置のようだが、規模はずっと大きい。力のあった寺の片りんが見える。影が薄かった太宰府の中世に光を当てる発見で、本堂跡の全容解明を期待したい」と話している。
＝2016/03/15付 西日本新聞朝刊＝http://www.nishinippon.co.jp/nnp/culture/article/231420
\title{\bf Announcement 214: Surprising mathematical feelings of a 7 years old girl
}
\author{{\it Institute of Reproducing Kernels}\\
Kawauchi-cho, 5-1648-16,\\
\date{}
\maketitle
{\bf Abstract: } In this announcement, we shall give the two surprising mathematical feelings of 7 years old girl Eko Michiwaki who stated the division by 3 of any angle and the division by zero $100/0=0$ as clear and trivial ones. As well-known, these famous problems are historical, and her results will be quite original.
\bigskip
\section{ Introduction}
We had met, 7 years old girl, Eko Michiwaki on November 23, 2014 at Tokyo Institute of Technology and August 23, 2014 at Kusatu Seminor House, with our colleagues. She, surprisingly enough, stated there repeatedly the division by 3 of any angle and the division by zero $100/0=0$ as clear and trivial ones. As well-known, these famous problems are historical and her results will be quite original.
\section{The division of any angle by 3}
\medskip
Eko Michiwaki said:
divide a given angle with 4 equal angles; this is simly done. Next, we divide one divided angle
with 4 equal angles similarly and the three angles add to other 3 angles. By continuing this procedure, we will be able to obtain the division by 3 of any angle. Her idea may be stated mathematically as follows:
$$
\frac{1}{4} + \frac{1}{4^2} + \frac{1}{4^3} + ... ...= \frac{1}{3}.
$$
However, her idea seems to be more clear than the above mathematical formula. For this sentence, see \cite{ann3} for the sense of the limit.
\bigskip
\section{The division by zero $100/0=0$}
\medskip
As we stated in \cite{ann1}, she stated that division by zero $100/0=0$ is clear and trivial for our recent results \cite{cs,kmsy,s,ttk}. The basic important viewpoint is that division and product are different concepts and the division by zero $100/0=0$ is clear and trivial from the own sense of the division, independently of product \cite{ann1}. From the viewpoint, our colleagues stated as follows:
\medskip
On July 11, 2014, Seiichi Koshiba and Masami Yamane said at
Gunma University:
The idea for the division of Hiroshi Michiwaki and Eko Michiwaki (6 years
old daughter) is that division and product are different concepts and they
were calculated independently for long old years, by repeated addition and
subtraction, respectively. Mathematicians made the serious mistake for very
long years that the division by zero is impossible by considering that division
is the inverse operation of product. The division by zero was, however, clear
and trivial, as z/0=0, from the own nature of division.
\medskip
On February 21, 2015, Seiichi Koshiba and Masami Yamane visited our Institute and we confirmed this meaning of these sentences and the basic idea on the division by zero.
\medskip
(2015.2.27)
\bigskip
\bibliographystyle{plain}
\begin{thebibliography}{10}
\bibitem{cs}
L. P. Castro and S.Saitoh, Fractional functions and their representations, Complex Anal. Oper. Theory {\bf7} (2013), no. 4, 1049-1063.
\bibitem{kmsy}
M. Kuroda, H. Michiwaki, S. Saitoh, and M. Yamane,
New meanings of the division by zero and interpretations on $100/0=0$ and on $0/0=0$,
Int. J. Appl. Math. Vol. 27, No 2 (2014), pp. 191-198, DOI: 10.12732/ijam.v27i2.9.
\bibitem{s}
S. Saitoh, Generalized inversions of Hadamard and tensor products for matrices, Advances inLinear Algebra \& Matrix Theory. Vol.4 No.2 (2014), 87-95.http://www.scirp.org/journal/ALAMT/
\bibitem{ttk}
S.-E. Takahasi, M. Tsukada and Y. Kobayashi, Classification of continuous fractional binary operations on the real and complex fields, Tokyo Journal of Mathematics (in press).
\bibitem{ann1}
Announcement 179: Division by zero is clear as z/0=0 and it is fundamental in mathematics,
Institute of Reproducing Kernels, 2014.10.22.
\bibitem{ann2}
Announcement 185: The importance of the division by zero $z/0=0$, Institute of Reproducing Kernels, 2014.11.28.
\bibitem{ann3}
Announcement 213: An interpretation of the identity $ 0.999999...... =1$, Institute of Reproducing Kernels, 2015.2.26.
\end{thebibliography}
\end{document}
\title{\bf Announcement 213: An interpretation of the identity $ 0.999999...... =1$
}
\author{{\it Institute of Reproducing Kernels}\\
\date{}
\maketitle
{\bf Abstract: } In this announcement, we shall give a very simple interpretation for the identity: $ 0.999999......=1$.
\bigskip
\section{ Introduction}
On January 8, 2008, Yuusuke Maede, 8 years old boy, asked the question, at Gunma University, that (Announcement 9(2007/9/1): Education for genius boys and girls):
What does it mean by the identity:
$$
0.999999......=1?
$$
at the same time, he said: I am most interesting in the structure of large prime numbers. Then, a teacher answered for the question by the popular reason based on the convergence of the series: $0.9, 0.99, 0.999,... $. Its answer seems to be not suitable for the 8 years old boy with his parents (not mathematicians). Our answer seems to have a general interest, and after then, such our answer has not been heard from many mathematicians, indeed.
This is why writting this announcement.
\medskip
\bigskip
\section{An interpretation}
\medskip
In order to see the essence, we shall consider the simplist case:
\begin{equation}
\frac{1}{2} + \frac{1}{2^2} + \frac{1}{2^3} + ... = 1.
\end{equation}
Imagine a tape of one meter length, we will give its half tape: that is,
\begin{equation}
\frac{1}{2}.
\end{equation}
Next, we will give its (the rest's half) half tape; that is, $\frac{1}{2}\cdot \frac{1}{2} = \frac{1}{2^2}$, then you have, altogether
\begin{equation}
\frac{1}{2} + \frac{1}{2^2} .
\end{equation}
Next, we will give the last one's half (the rest's half); that is, $\frac{1}{2}\cdot \frac{1}{2} \cdot \frac{1}{2}= \frac{1}{2^3}$,
then, you have, altogether
\begin{equation}
\frac{1}{2} + \frac{1}{2^2} + \frac{1}{2^3}.
\end{equation}
By this procedure, you will be able to obtain the small tapes endressly. Imagine all the sum as in the left hand side of (2.1). However, we will see that this sum is just the division of the one meter tape. Therefore, we will be able to confim the identity (2.1), clearly.
The question proposed by Y. Maede is just the small change the ratio $\frac{1}{2}$ by $\frac{9}{10}$.
\bigskip
\section{ Conclusion}
Y. Maede asked the true sense of the limit in the series:
$$
0.999999.....
$$
that is, this series is approaching to 1; however, is it equal or not ? The above interpretation means that the infinite series equals to one and it is just the infinite division of one. By this inverse approarch, the question will make clear.
\medskip
\bigskip
\section{Remarks}
Y. Maede stated a conjecture that for any prime number $p$ $( p \geqq 7)$, for $1$ of $ - 1$
\begin{equation}
11111111111
\end{equation}
may be divided by $p$ (2011.2.6.12:00 at University of Aveiro, by skype)
\medskip
(No.81, May 2012(pdf 432kb)
www.jams.or.jp/kaiho/kaiho-81.pdf).
\medskip
This conjecture was proved by Professors L. Castro and Y. Sawano,
independently. Y. Maede gave later an interesting interpretation for his conjecture.
\medskip
(2015.2.26)
\end{document}
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