wonders of numbers
... permit vision The colorful, prismatic hairs seem to supplement the vision of the eyes, and in the absence of visible light, the species is able to "see" using the hairs Their complex nervous system ... transcend space and time Contemplating the wondrous relationships among these numbers stretches the imagination, and the usefulness of these numbers allows us to build spaceships and investigate ... exist, much less that man is able to discover them The miracle of the appropriateness of the language of mathematics for the formulation of the laws of physics is a wonderful gift which we neither...
Ngày tải lên: 28/10/2014, 23:31
... Who Is Bill Gates? Who Is Bill Gates? Bill Gates is one of the richest and most successful business executives in the world Millions of people have used his computer programs for the past three ... emails since(since 1975) They have given a lot of to schools last year (since 1990) They gave a lot of books books to schools since 1990 have seen many friends since I (since I came II saw many ... year ago (since 2003) Using For Using For Use for + length of time to show how long something has lasted Millions of people have used Gates s software for the last three decades for the last three...
Ngày tải lên: 19/08/2013, 14:15
... is assumed that telic vPs are predicates of events and their result states, e.g lose my glasses has the meaning of s e[e cause s & my-glasses-arelost (s) ] The idea of a resultative aspect is ... achievement such as lose my glasses The aspectual makeup of the Perfect participle 279 causes a state of the glasses being lost, and an accomplishment such as build a sandcastle quite clearly results in ... forces the two conjuncts to be distinct.21 (31) a John has lost his glasses and Mary has too b *John has just now lost his glasses and Mary has too, several times before Thus we see that English offers...
Ngày tải lên: 18/10/2013, 14:15
Perfect tense and pluperfect tense
... class ask each other ten questions and give the answers These questions and answers are followed by class participation which involves other pronouns which are not necessarily used since the ... a sabr´ a saldr´ a cabremos diremos habremos haremos podremos pondremos querremos sabremos saldremos cabr´is e dir´is e habr´is e har´is e podr´is e pondr´is e querr´is e sabr´is e saldr´is e ... the perfect tense with different subject pronouns Method – Two class members ask each other ten questions, and afterwards the class is free to ask them both questions Use words like ¿Cu´ ndo?/When?,...
Ngày tải lên: 01/11/2013, 06:20
Tài liệu Present perfect continuous & Present perfect continuous and simple pptx
... Present perfect continuous and simple Unit 10 Present perfect continuous and simple A Nghiên cứu ví dụ sau: Ann s clothes are covered in paint She has been painting the ceiling Quần ... động So s nh ví dụ sau: My hands are very dirty I’ve been repairing the car Tay bẩn Tôi s a xe The car is OK again I’ve repaired it Chiếc xe lại tốt Tôi s a She s been smoking too much recently She ... toàn s n Cô s n trần nhà The ceiling was white Now it is blue She has painted the ceiling Trần nhà trước màu trắng Bây màu xanh Cô s n trần nhà Has been painting present perfect continuous (thì...
Ngày tải lên: 19/01/2014, 17:20
Unit 10. Present perfect continuous and simple doc
... đọc s ch rồi? Mary is still writing letters She s been writing letters all day Mary viết thư Cô viết thư ngày hôm They’ve been playing tenis since o’clock Họ chơi quần vợt từ lúc Chúng ta dùng simple ... times (cho hành động kết thúc) How many pages of that book have you read? Bạn đọc trang s ch rồi? Mary has written ten letters today Hôm Mary viết mười thư They’ve played tennis three times this ... It s nice to meet you again What have you been doing since we last met? Rất mừng gặp lại bạn Bạn làm từ gặp lần sau cùng? Where s the book I gave you? What have you done with it? Cuốn s ch...
Ngày tải lên: 22/06/2014, 21:20
Present perfect simple and continuous potx
... With eyes severe, and beard of formal cut, Full of wise saws and modern instances; And so he plays his part The sixth age shifts Into the lean and slipper`d pantaloon With spectacles on nose and ... That ends his strange eventful history, Is second childishness and mere oblivion Sans teeth, sans eyes, sans taste, sans everything, The audition P = Producer D = Director P Well, that was very ... Dickens, or something? P Yes, it `s called The Spirit of Dickens D Well, that `s just what he did, he caught the spirit of this rather self-important old man, but to me he just doesn`t look the part...
Ngày tải lên: 12/07/2014, 17:20
Báo cáo toán học: " Asymptotics of Young Diagrams and Hook Numbers" potx
... study of the hook formula for various kinds of Young diagrams The proof of 1.2 is based on the properties of shifted Schur functions[Ok.Ol]which appeared in the asymptotic theory of the representation ... properties of the products of these hook numbers We remark again that even though the statement of theorem[1.2]nothing to with asymptotics, its proof does use asymptotic methods It should be interesting ... journal of combinatorics no.1 (1997), #R22 Since s (x) is homogeneous of degree |µ|, s (λ) = |µ| · s (1, · · · , 1) k The proof now follows easily 2.2 The proof of theorem[1.3.b] Since λ is a...
Ngày tải lên: 07/08/2014, 06:20
Báo cáo toán học: " DIAGONAL CHECKER-JUMPING AND EULERIAN NUMBERS FOR COLOR-SIGNED PERMUTATIONS" pps
... number of signs to some of the permutation values Say that we have p colors of plus signs and q colors of minus signs for the n first values, and p resp q colors for the remaining values We would then ... Proof The proof follows the proof in Comtet [3], p 243, for ordinary Eulerian numbers We shall now present new, combinatorial, proofs of two of the pq-analogues of Brenti s theorems, and then ... that the number of descents is unchanged Either the ±n must go into an old descent or a +n goes last; in all, this gives p(k +1) + qk possibilities The second term has a similar interpretation Theorem...
Ngày tải lên: 07/08/2014, 06:20
Báo cáo toán học: "On the number of perfect matchings and Hamilton cycles in -regular non-bipartite graphs" ppsx
... determines the triple of edges The eight sequences divide into five possible cases, as the first four sequences lead to equivalent outcomes (covered by case below) Taken in order, the five cases are: ... ⊕ C is a pair of cycles of lengths a and b + c; for at most ni choices, Ci ⊕ C is a pair of cycles of lengths c and a + b; for at most ni choices, Ci ⊕ C is a triple of cycles of lengths a, b ... and the second eigenvalue of the adjacency matrix of G is at most ηdn for small η, then G is super (η)-regular (see for example Chung [4] Theorem 5.1) and so our result holds for such graphs We...
Ngày tải lên: 07/08/2014, 06:22
Báo cáo toán học: "Total domination and matching numbers in claw-free graphs" doc
... For a set S ⊆ V , its open neighborhood is the set N (S) = ∪v S N(v) and its closed neighborhood is the set N [S] = N (S) ∪ S If Y ⊆ V , then the set S is said to dominate the set Y if Y ⊆ N [S] , while ... δ(G) ≥ 3, then γt (G) ≤ n/2 Proof The ONH hypergraph HG of G has n vertices and n edges with all edges of size at least three By Theorem 1, there exists a transversal in HG of size at most (n+n)/4 ... is a transversal of HG of size at most (2n − 3)/4, contradicting Observation This completes the proof of Observation 16 ¾ By Observation 16, we may assume that at least one neighbor of v has...
Ngày tải lên: 07/08/2014, 13:21
Báo cáo toán học: "Minimum rank of matrices described by a graph or pattern over the rational, real and complex numbers" doc
... the same cycles of size The cycles of W (respectively, S1 ) of size are precisely the 4-sets which contain no cycle of size Thus, the cycles of W and S1 of size are equal Since both W and S1 have ... patterns CS1 and CS2 such that the minimum rank of matrices described by CS1 is less over the complex numbers than over the real numbers1 , and the minimum rank of matrices described by CS2 is less ... like that of Theorem 2.3, so we only summarize the steps Suppose to the contrary that W is an 11 by matrix of rank over Q whose cycles are those of S2 Since each set of rows of S2 is linearly...
Ngày tải lên: 07/08/2014, 15:23
Báo cáo toán học: "On the sharpness of some results relating cuts and crossing numbers" pptx
... let s and t be two distinct vertices in G Then there exists a crossing minimal planarization P of G, such that the size of the minimum s, t-cut in P is the same as the size of the minimum s, t-cut ... results In the second part, we describe the families of graphs that we use in the proof of our main result In the last section, we point out a contradiction of our results with some arguments of ... perhaps lead to a solution of Problems 4.6 or 4.7 Although our counterexample shows that the proof in [7] has a flaw, it does not disprove any of the main statements in that paper These thus share the...
Ngày tải lên: 08/08/2014, 12:22
Báo cáo toán học: "On a new family of generalized Stirling and Bell numbers" pps
... induction together with Ss;h (1, 1) = yields the first assertion The second follows also from the recursion relation by induction since Ss;h (n, n−1) = Ss;h(n−1, n−2)+h(n−1)Ss;h (n−1, n−1) = Ss;h (n−1, ... Ss;1(n, k − 1) + {sn + (1 − s) k)}Ss;1(n, k) Let us furthermore restrict to s ∈ [0, 1] Since s = corresponds to the conventional Stirling numbers of second kind S( n, k) (see Example 3.1) and the ... numbers Finally, in Section 6, some conclusions are presented The generalized Stirling and Bell numbers for s = 0, In this section, we want to discuss the first two instances of the generalized Stirling...
Ngày tải lên: 08/08/2014, 14:23
Báo cáo toán học: "The (t,q)-Analogs of Secant and Tangent Numbers" potx
... 21 ) The proof of (a) is a consequence of Theorem 1.1a that follows The proof of (b) (r) will be fully given at the end of Section It uses the following argument: as tanq (u) (r) (resp secq (u)) ... w stands for the sum of all letters of w When L = {2, 4, 6, } the set of all permutations σ from Sn such that Ligne σ = L is the set T of all alternating permutations We then have the subsequent ... his mentor Gillis [EG76], has brought his decisive contribution to the subject [GZ83], [GRZ83], [FZ88] The method of proof used in this paper is very much inspired by these papers Both Theorems...
Ngày tải lên: 08/08/2014, 14:23
counting and understanding numbers ages 7-8
... takes the cards with the diagrams to the right of the fractions and the other takes the cards with the diagrams to the left If two cards are equivalent, the first to say ‘snap!’ wins the cards ... The player with the most points at the end of ten rounds is the winner SUGGESTED QUESTIONS/PROMPT: • Which of these numbers is the smaller? Which is the larger? • Which sign is this? • Tell me a ... order of the numbers SUGGESTED QUESTIONS: • Which of these numbers is the smallest? Which is the largest? Which numbers come in between them? Monkey puzzles (page 25) To provide further similar...
Ngày tải lên: 31/10/2014, 13:36
Bài tập Danh động từ hoàn thành và Phân từ hoàn thành (Perfect gerunds and participles)
... denied the accused man on the day of the crime a to see b of having seen c to have seen d having seen 22 Tom was accused of _ some top secret document a steal b having stolen c stealing ... all the papers, Daisy put them back in the file 12 ( park) the car about a kilometre from the stadium, I walked the rest of the way III Choose the best answer _ for twelve hours, I ... know where the theater was, so she asked for directions at the hotel reception As she was a nurse, she knew what to after the accident...
Ngày tải lên: 03/06/2015, 09:09
The graphs below show the numbers of male and female workers in 1975 and 1995 in several employment sectors of the republic of Freedonia
... the communications sector Twenty years later, though the number of men remained unchanged, the number of women rose to 550 000 A similar situation was seen in the wholesale and retail trade sector, ... model answer: The two decades between 1975 and 1995 brought significant changes in the representation of women in Freedonia 's work force, according to the graphs In 1975, for example, some 300 ... where the number of women rose from about 550 000 in 1975 to almost 800 000 two decades later The number of men in this sector remained stable over the period, at around 700 000 Women also made...
Ngày tải lên: 04/10/2012, 10:02
Báo cáo y học: "Medical emergency teams and rapid response triggers - the ongoing quest for the ‘perfect’ patient safety system"
Ngày tải lên: 25/10/2012, 10:02