This document contains definitions, examples, and results related to Cauchy sequences, subsequences, and complete metric spaces. It defines a Cauchy sequence as one where the distances between terms gets arbitrarily small as the sequence progresses. It proves that every convergent real sequence is Cauchy. It also defines subsequences and subsequential limits, and proves properties about them. Finally, it defines a complete metric space as one where every Cauchy sequence converges, and provides examples showing the complex numbers form a complete metric space while some subsets of real numbers do not.
ppt on Vector spaces (VCLA) by dhrumil patel and harshid panchalharshid panchal
ย
this is the ppt on vector spaces of linear algebra and vector calculus (VCLA)
contents :
Real Vector Spaces
Sub Spaces
Linear combination
Linear independence
Span Of Set Of Vectors
Basis
Dimension
Row Space, Column Space, Null Space
Rank And Nullity
Coordinate and change of basis
this is made by dhrumil patel which is in chemical branch in ld college of engineering (2014-18)
i think he is the best ppt maker,dhrumil patel,harshid panchal
ppt on Vector spaces (VCLA) by dhrumil patel and harshid panchalharshid panchal
ย
this is the ppt on vector spaces of linear algebra and vector calculus (VCLA)
contents :
Real Vector Spaces
Sub Spaces
Linear combination
Linear independence
Span Of Set Of Vectors
Basis
Dimension
Row Space, Column Space, Null Space
Rank And Nullity
Coordinate and change of basis
this is made by dhrumil patel which is in chemical branch in ld college of engineering (2014-18)
i think he is the best ppt maker,dhrumil patel,harshid panchal
Matrix Transformations on Some Difference Sequence SpacesIOSR Journals
ย
The sequence spaces ๐โ(๐ข,๐ฃ,ฮ), ๐0(๐ข,๐ฃ,ฮ) and ๐(๐ข,๐ฃ,ฮ) were recently introduced. The matrix classes (๐ ๐ข,๐ฃ,ฮ :๐) and (๐ ๐ข,๐ฃ,ฮ :๐โ) were characterized. The object of this paper is to further determine the necessary and sufficient conditions on an infinite matrix to characterize the matrix classes (๐ ๐ข,๐ฃ,ฮ โถ๐๐ ) and (๐ ๐ข,๐ฃ,ฮ โถ ๐๐). It is observed that the later characterizations are additions to the existing ones
Generalised Statistical Convergence For Double SequencesIOSR Journals
ย
Recently, the concept of ๐ฝ-statistical Convergence was introduced considering a sequence of infinite
matrices ๐ฝ = (๐๐๐ ๐ ). Later, it was used to define and study ๐ฝ-statistical limit point, ๐ฝ-statistical cluster point,
๐ ๐ก๐ฝ โ ๐๐๐๐๐ก inferior and ๐ ๐ก๐ฝ โ ๐๐๐๐๐ก superior. In this paper we analogously define and study 2๐ฝ-statistical
limit, 2๐ฝ-statistical cluster point, ๐ ๐ก2๐ฝ โ ๐๐๐๐๐ก inferior and ๐ ๐ก2๐ฝ โ ๐๐๐๐๐ก superior for double sequences.
Matrix Transformations on Some Difference Sequence SpacesIOSR Journals
ย
The sequence spaces ๐โ(๐ข,๐ฃ,ฮ), ๐0(๐ข,๐ฃ,ฮ) and ๐(๐ข,๐ฃ,ฮ) were recently introduced. The matrix classes (๐ ๐ข,๐ฃ,ฮ :๐) and (๐ ๐ข,๐ฃ,ฮ :๐โ) were characterized. The object of this paper is to further determine the necessary and sufficient conditions on an infinite matrix to characterize the matrix classes (๐ ๐ข,๐ฃ,ฮ โถ๐๐ ) and (๐ ๐ข,๐ฃ,ฮ โถ ๐๐). It is observed that the later characterizations are additions to the existing ones
Generalised Statistical Convergence For Double SequencesIOSR Journals
ย
Recently, the concept of ๐ฝ-statistical Convergence was introduced considering a sequence of infinite
matrices ๐ฝ = (๐๐๐ ๐ ). Later, it was used to define and study ๐ฝ-statistical limit point, ๐ฝ-statistical cluster point,
๐ ๐ก๐ฝ โ ๐๐๐๐๐ก inferior and ๐ ๐ก๐ฝ โ ๐๐๐๐๐ก superior. In this paper we analogously define and study 2๐ฝ-statistical
limit, 2๐ฝ-statistical cluster point, ๐ ๐ก2๐ฝ โ ๐๐๐๐๐ก inferior and ๐ ๐ก2๐ฝ โ ๐๐๐๐๐ก superior for double sequences.
Some properties of two-fuzzy Nor med spacesIOSR Journals
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The study sheds light on the two-fuzzy normed space concentrating on some of their properties like convergence, continuity and the in order to study the relationship between these spaces
Dual Spaces of Generalized Cesaro Sequence Space and Related Matrix Mappinginventionjournals
ย
In this paper we define the generalized Cesaro sequence spaces ํํํ (ํ, ํ, ํ ). We prove the space ํํํ (ํ, ํ, ํ ) is a complete paranorm space. In section-2 we determine its Kothe-Toeplitz dual. In section-3 we establish necessary and sufficient conditions for a matrix A to map ํํํ ํ, ํ, ํ to ํโ and ํํํ (ํ, ํ, ํ ) to c, where ํโ is the space of all bounded sequences and c is the space of all convergent sequences. We also get some known and unknown results as remarks.
Matrix Transformations on Paranormed Sequence Spaces Related To De La Vallรฉe-...inventionjournals
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In this paper, we determine the necessary and sufficient conditions to characterize the matrices which transform paranormed sequence spaces into the spaces ํํ (ํ) and ํํ โ(ํ) , where ํํ (ํ) denotes the space of all (ํ, ํ)-convergent sequences and ํํ โ(ํ) denotes the space of all (ํ, ํ)-bounded sequences defined using the concept of de la Vallรฉe-Pousin mean.
A Probabilistic Algorithm for Computation of Polynomial Greatest Common with ...mathsjournal
ย
In the earlier work, Knuth present an algorithm to decrease the coefficient growth in the Euclidean algorithm of polynomials called subresultant algorithm. However, the output polynomials may have a small factor which can be removed. Then later, Brown of Bell Telephone Laboratories showed the subresultant in another way by adding a variant called ๐ and gave a way to compute the variant. Nevertheless, the way failed to determine every ๐ correctly.
In this paper, we will give a probabilistic algorithm to determine the variant ๐ correctly in most cases by adding a few steps instead of computing ๐ก(๐ฅ) when given ๐(๐ฅ) and๐(๐ฅ) โ โค[๐ฅ], where ๐ก(๐ฅ) satisfies that ๐ (๐ฅ)๐(๐ฅ) + ๐ก(๐ฅ)๐(๐ฅ) = ๐(๐ฅ), here ๐ก(๐ฅ), ๐ (๐ฅ) โ โค[๐ฅ]
We show, if thenormsof
k
S
areuniformly boundedon
๏ป ๏ฝ n
p
l
for a bounded
๏ป ๏ฝn p
if and onlyifthereexists
ํ, 1 โค ํ < โ,such thatthenormsin
๏ป ๏ฝ n
p
l
andtheclassical space
r
l
are equivalent. A "pointwise-bounded" family
of continuous linear operators from a Banach space to a normed space is "Uniformly bounded."
Stated another way, letํ be a Banach space and ํ be a normed space. If ํ is a collection of bounded linear
mappings of ํ into ํ such that for eachํฅํํ, ํ ํขํ ํดํฅ ; ํด โ ํ < โ, thenํ ํขํ ํด : ํด โ ํ < โ.
In this slide i am trying my best to describe about the power series. If you face any problem or anything that you can't understand please contact me on facebook:https://www.facebook.com/asadujjaman.asad.79
Model Attribute Check Company Auto PropertyCeline George
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In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
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Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Operation โBlue Starโ is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
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This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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It is possible to hide or invisible some fields in odoo. Commonly using โinvisibleโ attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
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Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
2. Submitted to:
๏ผ Maโam Mehak
Submitted by:
๏ผ Beenish Ebad
๏ผ Bushra Razzaq
Subject :
๏ผ Math -B
3. Content:
Topics
Definition of Cauchy Sequence
Example of Cauchy Sequence
Result of Cauchy Sequence
Definition of Subsequence
Example of Subsequence
Result of Subsequence
Definition of Sub sequential Limit
Example of Sub sequential
Definition of Complete Metric Space
Example of Complete Metric Space
Results of Complete Metric Space
Application of Complete Metric Space
8. Results related to Cauchy
sequence:
๏ Every Cauchy sequence in a metric space
is bounded.
๏ The Cauchy sequence in a discrete metric
space becomes constant after a finite no
of terms.
10. Example :
IF A SEQUENCE
๐ ๐ ๐๐ ๐๐๐๐ ๐๐๐๐๐๐๐ ๐๐๐๐๐๐๐๐๐ ๐๐ ๐ ๐๐๐๐๐ ๐, ๐๐๐๐ ๐๐๐๐ ๐๐๐๐ ๐๐๐๐๐ ๐๐๐๐๐๐๐๐๐๐๐ ๐๐ ๐ ๐
CONVERGES TO X
๏ Let ๐ ๐ ๐
be any sequence of ๐ ๐ .
๏ since ๐ ๐ converges to x, so for ฮต > 0
๏ there exists a positive integer ๐ ๐
๏ such that,
๏ โ ๐ ๐ฟ ๐, ๐ฟ = ๐ฟ ๐, ๐ฟ < ๐, โ ๐ง โฅ ๐ ๐
๏ In particular,
๏ โ ๐ ๐ฟ ๐ ๐
, ๐ฟ = ๐ฟ ๐ ๐
, ๐ฟ < ๐, โ ๐ ๐ โฅ ๐ ๐
๏ This shows that the subsequence ๐ ๐ ๐
of ๐ ๐ also
converges to x.
๏ Hence any subsequence of ๐ ๐ converges to x.
11. Results related to subsequence
๏ If a sequence of ๐ฑ ๐ง converges to a point
x in a metric space X, Then every
subsequence of ๐ฑ ๐ง Converges to x.
๏ Every Cauchy sequence in a metric space
converges if and only if it has a
convergent subsequence
12. SUB SEQUENTIAL LIMIT:
๏ Let xn be a sequence in a metric space X.
and xnk
be a subsequence of xn , if the
subsequence xnk
converges, then its limit is
called sub sequential limit of the sequence xn .
13. EXAMPLE:
Consider a sequence ๐ ๐ in an R with nth term defined as
๐ ๐ =
๐ , ๐๐ ๐ ๐๐ ๐๐๐๐
๐
๐
, ๐๐ ๐ ๐๐ ๐๐ ๐
๏ Then,
๏
๐
๐
๐๐๐๐๐๐๐๐๐ ๐๐ ๐,
๏ And so,
๏
๐
๐
is a convergent sub sequence of ๐ ๐ ,
๏ but the sequence ๐ ๐ itself does not
converge.
๏ Here 0 is the sub sequential limit of ๐ ๐ .
15. Definition:
๏ A complete metric space a metric space in
every Cauchy sequence is convergent.
๏ This definition means that if {๐ฅ ๐ } is any
Cauchy sequence in a complete metric space
X, then it should converge to some point of X.
16. Example:
๏ X=โ]0,1โค[ is not a complete metric space,
because {๐ฅ ๐ }={1/n} is a Cauchy sequence
in]0,1[ and tends to converge at 0 but 0 ษ X
=]0,1[. so, {๐ฅ ๐ }={1/n} is not a convergent
sequence in X.
17. APPLICATIONS:
โข Complete metric space is important in
computer forensics and cryptography in securing
data and information.
โข It has direct application to elliptic curve
cryptography.
โข Hence, this enhances application in ICT
and other areas of computer.
18. ๏ Theorem 1:
Every discrete metric space is complete metric space.
๏ Theorem 2:
A subspace Y of a complete metric space X is complete if
and only if Y is closed in X
19. Example no 1:
Show that the space C of complex
numbers is complete
Solution:
In order to prove that C is complete, we have to show
that every Cauchy sequence in C converges in C.
Let ๐ง ๐ be Cauchy sequence in C.
Letโ> 0, then by definition of Cauchy sequence, there
exist a natural number ๐ยฐ such that
21. Combine (1) and (3)
๐ ๐ โ ๐๐ <โ , โ ๐, ๐ โฅ ๐ยฐ โฆโฆโฆ. (5)
(4) and (5) show that ๐ ๐ and ๐๐ are Cauchy sequence
of real numbers.
Since R is complete, so๐ ๐ โ ๐ โ ๐ ๐๐๐ ๐๐ โ ๐ โ ๐ ,
22. (ii) There exist natural numbers ๐1 ๐๐๐ ๐2 such that
๐ ๐ โ ๐ <
โ
2
, โ ๐ โฅ ๐1 and
๐๐ โ ๐ <
โ
2
, โ ๐ โฅ ๐2
If ๐โฒ = ๐๐๐ฅ ๐1, ๐2 , then above expressions become
๐ ๐ โ ๐ <
โ
2
, โ ๐ โฅ ๐โฒ and
๐๐ โ ๐ <
โ
2
, โ ๐ โฅ ๐โฒ โฆโฆ. (6)
23. ๐ ๐ โ ๐ = (๐ ๐ โ ๐ ๐)2+(๐ ๐ โ ๐)2 <
โ2
2
+
โ2
2
,
โ ๐ โฅ ๐โฒ
๐ ๐ โ ๐ <โ , โ ๐ โฅ ๐โฒ
This show that ๐ ๐ converges in C, so C is
complete.
24. Example 3:
If (X, d1) and (Y, d2) are complete metric spaces then
show that the product space Xร ๐ with metric
d ๐ ๐, ๐ ๐ , (๐ ๐, ๐ ๐) = ๐ ๐(๐ ๐, ๐ ๐) ๐ + ๐ ๐(๐ ๐, ๐ ๐) ๐ is a
complete metric space.
Solution:
In order to prove that Xร ๐is complete, we have to show
that every Cauchy sequence in Xร ๐ converges in Xร ๐.
Let ๐ง ๐ be any Cauchy sequence in Xร Y, where zn =
(xn , yn) โ Xร Y.
25. Let โ >0, then by the definition of Cauchy sequence, there exist
a natural number ๐ยฐ such that
d (zm , zn) >โ , โ ๐, ๐ โฅ ๐ยฐ
๐1(๐ฅ ๐, ๐ฅ ๐) 2 + ๐2(๐ฆ ๐, ๐ฆ๐) 2 < โ , โ ๐ , ๐ โฅ ๐ยฐ
๐1(๐ฅ ๐ , ๐ฅ ๐) 2 + ๐2(๐ฆ ๐, ๐ฆ๐) 2 โ 0 ๐๐ ๐ , ๐ โ โ
๐1(๐ฅ ๐ , ๐ฅ ๐) 2
+ ๐2(๐ฆ ๐, ๐ฆ๐) 2
โ 0 ๐๐ ๐ , ๐ โ โ
๐1 ๐ฅ ๐ , ๐ฅ ๐ โ 0 ๐๐ ๐ , ๐ โ โ and ๐2(๐ฆ ๐, ๐ฆ๐) โ
0 ๐๐ ๐ , ๐ โ โ
26. This show that ๐ฅ ๐ and ๐ฆ๐ are Cauchy sequences in
X and Y respectively.
Since X and Y are complete, so xn โ
x โ
X , yn โ
y โ ๐.
Therefore, (xn , yn)โ
(x, y) โ Xร Y, i.e zn โ
(x,y) โ ๐ ร ๐.
This show that ๐ง ๐ converges in Xร Y, so Xร Y is
complete