## Profile

Verified name
341,336 followers|11,692,001 views

## Stream

Shared publicly  -

New #GoogleMaps image update? How lavaly. Simply magmaficent. goo.gl/fETjCn﻿
16

Wow﻿

Shared publicly  -

Bali’s Gunung Kawi on Street View: You could always rely on 11th-century burial plans to be set in stone. #Bali﻿
© Dani Pratikno - Balitraveljournal.com - Bali Travel and Event Information
30
3

Amazing﻿

Shared publicly  -

HBD .com! The simple suffix that’s defined the way we name places on the WWW is 30 this month. http://g.co/go/xgvhs﻿
15
1

Shared publicly  -

From the bright colors of Bogotá to Berlin’s historically significant East Side Gallery, explore more than 10,000 street art images (and the stories behind them) starting today on the Google Art Project #StreetArtProjectg.co/streetart﻿
24
1

i would like to participate n contribute but how﻿

Shared publicly  -

Need more art in your everyday life? The new extension for  will show you a different work of art each time you open a new browser tab. See masterpieces by Van Gogh, Monet, Degas and other iconic artists from museums around the world with a single click!

Get it here → g.co/artprojectextension﻿
16
2

that's nice.  i will install this extension "google art project"﻿

Shared publicly  -

Last Monday, a plane powered by the sun started an amazing journey around the world. The plane already broke its predecessor's world record of longest straight distance flown -- and that's just the beginning. Way to go

Track the plane: www.solarimpulse.com/rtw
#PoweredByTheSun #RTW﻿
7
1

Announcement 179: Division by zero is clear as z/0=0 and it is fundamental in mathematics

\documentclass[12pt]{article}
\usepackage{latexsym,amsmath,amssymb,amsfonts,amstext,amsthm}
\numberwithin{equation}{section}
\begin{document}
\title{\bf Announcement 179: Division by zero is clear as z/0=0 and it is fundamental in mathematics\\
}
\author{{\it Institute of Reproducing Kernels}\\
Kawauchi-cho, 5-1648-16,\\
Kiryu 376-0041, Japan\\
E-mail: kbdmm360@yahoo.co.jp\\
}
\date{\today}
\maketitle
{\bf Abstract: } In this announcement, we shall introduce the zero division $z/0=0$. The result is a definite one and it is fundamental in mathematics.
\bigskip
\section{Introduction}
%\label{sect1}
By a natural extension of the fractions

\frac{b}{a}

for any complex numbers $a$ and $b$, we, recently, found the surprising result, for any complex number $b$

\frac{b}{0}=0,

incidentally in \cite{s} by the Tikhonov regularization for the Hadamard product inversions for matrices, and we discussed their properties and gave several physical interpretations on the general fractions in \cite{kmsy} for the case of real numbers. The result is a very special case for general fractional functions in \cite{cs}.
The division by zero has a long and mysterious story over the world (see, for example, google site with division by zero) with its physical viewpoints since the document of zero in India on AD 628, however,
Sin-Ei, Takahasi (\cite{taka}) (see also \cite{kmsy}) established a simple and decisive interpretation (1.2) by analyzing some full extensions of fractions and by showing the complete characterization for the property (1.2). His result will show that our mathematics says that the result (1.2) should be accepted as a natural one:
\bigskip
{\bf Proposition. }{\it Let F be a function from ${\bf C }\times {\bf C }$ to ${\bf C }$ such that
$$F (b, a)F (c, d)= F (bc, ad)$$
for all
$$a, b, c, d \in {\bf C }$$
and
$$F (b, a) = \frac {b}{a }, \quad a, b \in {\bf C }, a \ne 0.$$
Then, we obtain, for any $b \in {\bf C }$
$$F (b, 0) = 0.$$
}
\medskip
\section{What are the fractions $b/a$?}
For many mathematicians, the division $b/a$ will be considered as the inverse of product;
that is, the fraction

\frac{b}{a}

is defined as the solution of the equation

a\cdot x= b.

The idea and the equation (2.2) show that the division by zero is impossible, with a strong conclusion. Meanwhile, the problem has been a long and old question:
As a typical example of the division by zero, we shall recall the fundamental law by Newton:

F = G \frac{m_1 m_2}{r^2}

for two masses $m_1, m_2$ with a distance $r$ and for a constant $G$. Of course,

\lim_{r \to +0} F =\infty,

however, in our fraction

F = G \frac{m_1 m_2}{0} = 0.

\medskip

Now, we shall introduce an another approach. The division $b/a$ may be defined {\bf independently of the product}. Indeed, in Japan, the division $b/a$ ; $b$ {\bf raru} $a$ ({\bf jozan}) is defined as how many $a$ exists in $b$, this idea comes from subtraction $a$ repeatedly. (Meanwhile, product comes from addition).
In Japanese language for "division", there exists such a concept independently of product.
H. Michiwaki and his 6 years old girl said for the result $100/0=0$ that the result is clear, from the meaning of the fractions independently the concept of product and they said:
$100/0=0$ does not mean that $100= 0 \times 0$. Meanwhile, many mathematicians had a confusion for the result.
Her understanding is reasonable and may be acceptable:
$100/2=50 \quad$ will mean that we divide 100 by 2, then each will have 50.
$100/10=10 \quad$　will mean that we divide 100 by10, then each will have 10.
$100/0=0 \quad$　will mean that we do not divide 100, and then nobody will have at all and so 0.
Furthermore, she said then the rest is 100; that is, mathematically;
$$100 = 0\cdot 0 + 100.$$
Now, all the mathematicians may accept the division by zero $100/0=0$ with natural feelings as a trivial one?
\medskip
For simplicity, we shall consider the numbers on non-negative real numbers. We wish to define the division (or fraction) $b/a$ following the usual procedure for its calculation, however, we have to take care for the division by zero:
The first principle, for example, for $100/2$ we shall consider it as follows:
$$100-2-2-2-,...,-2.$$
How may times can we subtract $2$? At this case, it is 50 times and so, the fraction is $50$.
The second case, for example, for $3/2$ we shall consider it as follows:
$$3 - 2 = 1$$
and the rest (remainder) is $1$, and for the rest $1$, we multiple $10$,
then we consider similarly as follows:
$$10-2-2-2-2-2=0.$$
Therefore $10/2=5$ and so we define as follows:
$$\frac{3}{2} =1 + 0.5 = 1.5.$$
By these procedures, for $a \ne 0$ we can define the fraction $b/a$, usually. Here we do not need the concept of product. Except the zero division, all the results for fractions are valid and accepted.
Now, we shall consider the zero division, for example, $100/0$. Since
$$100 - 0 = 100,$$
that is, by the subtraction $100 - 0$, 100 does not decrease, so we can not say we subtract any from $100$. Therefore, the subtract number should be understood as zero; that is,
$$\frac{100}{0} = 0.$$
We can understand this: the division by $0$ means that it does not divide $100$ and so, the result is $0$.
Similarly, we can see that
$$\frac{0}{0} =0.$$
As a conclusion, we should define the zero divison as, for any $b$
$$\frac{b}{0} =0.$$
See \cite{kmsy} for the details.
\medskip

\section{In complex analysis}
We thus should consider, for any complex number $b$, as (1.2);
that is, for the mapping

w = \frac{1}{z},

the image of $z=0$ is $w=0$. This fact seems to be a curious one in connection with our well-established popular image for the point at infinity on the Riemann sphere.
However, we shall recall the elementary function

W(z) = \exp \frac{1}{z}

$$= 1 + \frac{1}{1! z} + \frac{1}{2! z^2} + \frac{1}{3! z^3} + \cdot \cdot \cdot .$$
The function has an essential singularity around the origin. When we consider (1.2), meanwhile, surprisingly enough, we have:

W(0) = 1.

{\bf The point at infinity is not a number} and so we will not be able to consider the function (3.2) at the zero point $z = 0$, meanwhile, we can consider the value $1$ as in (3.3) at the zero point $z = 0$. How do we consider these situations?
In the famous standard textbook on Complex Analysis, L. V. Ahlfors (\cite{ahlfors}) introduced the point at infinity as a number and the Riemann sphere model as well known, however, our interpretation will be suitable as a number. We will not be able to accept the point at infinity as a number.
As a typical result, we can derive the surprising result: {\it At an isolated singular point of an analytic function, it takes a definite value }{\bf with a natural meaning.} As the important applications for this result, the extension formula of functions with analytic parameters may be obtained and singular integrals may be interpretated with the division by zero, naturally (\cite{msty}).
\bigskip
\section{Conclusion}
The division by zero $b/0=0$ is possible and the result is naturally determined, uniquely.
The result does not contradict with the present mathematics - however, in complex analysis, we need only to change a little presentation for the pole; not essentially, because we did not consider the division by zero, essentially.
The common understanding that the division by zero is impossible should be changed with many text books and mathematical science books. The definition of the fractions may be introduced by {\it the method of Michiwaki} in the elementary school, even.
Should we teach the beautiful fact, widely?:
For the elementary graph of the fundamental function
$$y = f(x) = \frac{1}{x},$$
$$f(0) = 0.$$
The result is applicable widely and will give a new understanding for the universe ({\bf Announcement 166}).
\medskip
If the division by zero $b/0=0$ is not introduced, then it seems that mathematics is incomplete in a sense, and by the intoduction of the division by zero, mathematics will become complete in a sense and perfectly beautiful.
\bigskip

section{Remarks}
For the procedure of the developing of the division by zero and for some general ideas on the division by zero, we presented the following announcements in Japanese:
\medskip
{\bf Announcement 148} (2014.2.12):　 $100/0=0, 0/0=0$ 　--　 by a natural extension of fractions -- A wish of the God
\medskip
{\bf Announcement 154} (2014.4.22): A new world: division by zero, a curious world, a new idea
\medskip
{\bf Announcement 157} (2014.5.8): We wish to know the idea of the God for the division by zero; why the infinity and zero point are coincident?
\medskip
{\bf Announcement 161} (2014.5.30): Learning from the division by zero, sprits of mathematics and of looking for the truth
\medskip
{\bf Announcement 163} (2014.6.17): The division by zero, an extremely pleasant mathematics - shall we look for the pleasant division by zero: a proposal for a fun club looking for the division by zero.
\medskip
{\bf Announcement 166} (2014.6.29): New general ideas for the universe from the viewpoint of the division by zero
\medskip
{\bf Announcement 171} (2014.7.30): The meanings of product and division　--　The division by zero is trivial from the own sense of the division independently of the concept of product
\medskip
{\bf Announcement 176} (2014.8.9):　 Should be changed the education of the division by zero
\bigskip
\bibliographystyle{plain}
\begin{thebibliography}{10}
\bibitem{ahlfors}
L. V. Ahlfors, Complex Analysis, McGraw-Hill Book Company, 1966.
\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}
S. Koshiba, H. Michiwaki, S. Saitoh and M. Yamane,
An interpretation of the division by zero z/0=0 without the concept of product
(note).
\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{msty}
H. Michiwaki, S. Saitoh, M. Takagi and M. Yamada,
A new concept for the point at infinity and the division by zero z/0=0
(note).
\bibitem{s}
S. Saitoh, Generalized inversions of Hadamard and tensor products for matrices, Advances in Linear Algebra \& Matrix Theory. Vol.4 No.2 (2014), 87-95. http://www.scirp.org/journal/ALAMT/
\bibitem{taka}
S.-E. Takahasi,
{On the identities $100/0=0$ and $0/0=0$}
(note).
\bibitem{ttk}
S.-E. Takahasi, M. Tsukada and Y. Kobayashi, Classification of continuous fractional binary operators on the real and complex fields. (submitted)
\end{thebibliography}
\end{document}
アインシュタインも解決できなかった「ゼロで割る」問題
http://matome.naver.jp/odai/2135710882669605901

1423793753.460.341866474681。﻿
Have them in circles
341,336 people

Shared publicly  -

A new kind of awards begins now: welcome to the YTMAs. Experience the music here -> http://goo.gl/MOZhH0﻿
21
1

Lindsey Stirling! <3﻿

Shared publicly  -

54
6
Sean E
+
1
2
1

I saw it at LDP﻿

Shared publicly  -

'Keluarga' Google Street View -- kereta, trike, trolley dan kini juga kayak(!) akan berada di Citta Mall, Ara Damansara hujung minggu ini 21-22 Mac 2015 sempena Tinker & Invent. Lawati kami dan ketahui lebih lanjut mengenai Google Maps.

The Google Street View 'family' -- car, trike, trolley and now kayak(!) -- will be at Citta Mall, Ara Damansara this weekend 21-22 March 2015 in conjunction with Tinker & Invent. Come visit us and learn more about Google Maps.

·  Translate
Tinker and Invent event in 21 and 22 of March 2015 in Citta Mall Ara Damansara.
43
4

Shared publicly  -

EXID tops the chart on YouTube Week In Search last week.

1) EXID
The viral fancam that catapulted both EXID and its member Hani to fame has now reached over 10 million views on YouTube.

2) EXO
Fans were super excited about the teaser of their new music video ‘Call Me Baby’.

3) Clash of Clans (COC)
This multi platform strategy game was one of the most sought after searches on YouTube last week.

4) One Direction
The band is currently on their Asian leg of their On The Road Again tour.

5) Thinking Out Loud
James Maslow, actor and former Big Time Rush singer shared a cover of Ed Sheeran‘s “Thinking Out Loud” with his fans earlier this week.﻿
6
1

Shared publicly  -

Instant noodles inventor Momofuku Ando came out top on Search last week.

1) Momofuku Ando
Google celebrated the Japanese ramen inventor’s 105th birthday on 5th March.

2) Harrison Ford
The actor’s vintage airplane which he was flying lost engine power and crash-landed at a Los Angeles golf course last week.

3) John Cena
The popular WWE wrestling superstar was the latest victim of a celebrity death hoax.

4) All England 2015
Badminton fans followed the tournament which saw Chen Long and Carolina Marin bag the singles titles this year.

5) Putri Mardiana
This actress drew controversy around her relationship with someone’s husband.

6) Drone
The DCA released a warning prohibiting the flying of unauthorised drones in the vicinity of airports after drone photographs of commercial aircrafts approaching KL International Airport for landing surfaced in the public.

7) Holi
Malaysian Indians celebrated the joyful and colourful celebration of the arrival of spring, where people of all faiths throw coloured powder and water at each other.

8) 元宵 节 (Yuan Xiao Jie)
Malaysian Chinese celebrated the 15th Lunar New Year also known as “Chap Goh Meh” on 5th February 2015.

9) Nazim Othman
Fans were curious about this local actor’s condition after he posted an Instagram photo of his MRI brain scan.

10) Jho Low
Attention was on this business tycoon for his alleged involvement in 1MDB’s scandal.﻿
12
1

Shared publicly  -

Seat 6C looks pretty nice for a 260km/h train ride over to Kanazawa from Tokyo. Check out the new Hokuriku Shinkansen “Bullet Train” for yourself on Street View → goo.gl/dkFLC1﻿
45
3

Suresh kumar das
﻿
People
Have them in circles
341,336 people
Contact Information
Contact info
 Phone 03 2261 6400 Address Level 20, Quill 7 No.9 Jalan Stesen Sentral 5 KL Sentral, Kuala Lumpur 50470
Story
Tagline