ÀÛ¿ë¼Ò ¼Ò½Ä No.355 (2010.11.29)


¿¬»ç: ÀÌ »ç °è

Á¦¸ñ: Connes cohomology

ÀϽÃ: 2010³â 12¿ù 3ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£ 


12¿ù 3ÀÏ ¼¼¹Ì³ª ÈÄ Á¡½É ¶§ ±³³»¿¡¼­ ¼¼¹Ì³ª Á¾°­È¸½ÄÀÌ ÀÖ½À´Ï´Ù.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.354 (2010.11.15)


¿¬»ç: ÀÌ Çö È£

Á¦¸ñ: On moduli space of a quantum Heisenberg manifold

ÀϽÃ: 2010³â 11¿ù 19ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£ 

ÃÊ·Ï: Although S. Kang reignited a study of Yang-Mills functional on a quantum Heisenberg manifold, there has been known litte about the moduli space,. In this talk, I will show a result about the moduli space for a finite generated projective module over a qunatum Heisenberg manifold.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.353 (2010.11.8)


¿¬»ç: ³²°è¼÷

Á¦¸ñ: A Characterization of harmonic Bergman spaces

ÀϽÃ: 2010³â 11¿ù 12ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£ 


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ÀÛ¿ë¼Ò ¼Ò½Ä No.352 (2010.10.31)


¿¬»ç: ±è¼±È£

Á¦¸ñ: Simplicity of labelled graph $C^*$-algebras

ÀϽÃ: 2010³â 11¿ù 5ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£ 


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ÀÛ¿ë¼Ò ¼Ò½Ä No.351. (2010.10.25)


¿¬»ç: ±ÇÇö°æ

Á¦¸ñ: curvature invariants and generalized operator models

ÀϽÃ: 2010³â 10¿ù 29ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£ 


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ÀÛ¿ë¼Ò ¼Ò½Ä No.350. (2010.10.04)


¿¬»ç: °­µ¿¿À

Á¦¸ñ: Block Toeplitz operators

ÀϽÃ: 2010³â 10¿ù 8ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£ 


Âü°í: 10¿ù 15ÀÏÀº °³±³±â³äÀÏ·Î, 10¿ù 22ÀÏÀº ´ëÇѼöÇÐȸ °¡À»¿¬±¸¹ßǥȸ °ü°è·Î ÀÛ¿ë¼Ò¼¼¹Ì³ª ½±´Ï´Ù.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.349. (2010.09.27)


¿¬»ç: ÀÌÈÆÈñ

Á¦¸ñ: Some Beurling-Fourier algebras are operator algebras

ÀϽÃ: 2010³â 10¿ù 1ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£ 

ÃÊ·Ï:

In this talk we will introduce Beurling-Fourier algebras which are weighted versions of Fourier algebras on compact groups.

Beurling-Fourier algebras provide an interesting new class of commutative Banach algebras different from Fourier algebras.

We will demonstrate the differences by examining the possibility of being (completely) isomorphic to an operator algebra.

Our main example is constructed on the special unitary group SU(2).


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ÀÛ¿ë¼Ò ¼Ò½Ä No.348. (2010.09.13)


¿¬»ç: Raphael Ponge (Univ of Tokyo)

Á¦¸ñ: Noncommutative geometry and lower dimensional volumes in Riemannian geometry

ÀϽÃ: 2010³â 9¿ù 17ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£ 


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ÀÛ¿ë¼Ò ¼Ò½Ä No.347. (2010.09.03)


¾È³çÇϼ¼¿ä. ¼­¿ï´ëÇб³ °­µ¿¿À ÀÔ´Ï´Ù. À̹ø ÇбâºÎÅÍ ÀÛ¿ë¼Ò ¼Ò½ÄÁö ¸ÞÀÏÀ» Á¦°¡ º¸³»°Ô µÇ¾ú½À´Ï´Ù. ¼¼¹Ì³ª °ü·ÃÇÏ¿© ±Ã±ÝÇÑ Á¡ÀÌ ÀÖÀ¸½Ã¸é Àú¿¡°Ô ¸ÞÀÏÀ» º¸³»Áֽñ⠹ٶø´Ï´Ù.



¿¬»ç: ÇãÀ缺(ÇѾç´ë)

Á¦¸ñ: Distance Formula and Derivation Problem

ÀϽÃ: 2010³â 9¿ù 10ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£



-À̹øÇб⠼¼¹Ì³ª ½Ã°£Àº Áö³­ Çбâ¿Í °°ÀÌ ¿ÀÀüÀÔ´Ï´Ù. Àå¼Òµµ ¶È°°ÀÌ »ó»ê°ü 301È£ ÀÔ´Ï´Ù.


-9¿ù 10ÀÏ ¼¼¹Ì³ª ÈÄ, Á¡½É½Ã°£¿¡ ±³³»¿¡¼­ ÀÛ¿ë¼Ò °³°­È¸½ÄÀÌ ÀÖ½À´Ï´Ù.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.346. (2010.06.09)



¿¬»ç: ÀÌÀÎÇù(ÀÌÈ­¿©´ë)

Á¦¸ñ: A homology theory for one-dimensional genralized solenoids

ÀϽÃ: 2010³â 6¿ù 11ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£


¿¬»ç:  David Pask(Univ. of Wollongong)

Á¦¸ñ:  A quick introduction to k-graphs and their C*-algebras

ÀϽÃ: 2010³â 6¿ù 11ÀÏ ±Ý¿äÀÏ 14½Ã

Àå¼Ò: 27µ¿ 414È£

ÃÊ·Ï : A k-graph is a higher dimensional analog of a directed graph. In particular a 1-graph is the path category of a directed graph. One may associate a C*-algebra to a k-graph in such a way that the C*-algebra of a 1-graph is the C*-algebra associated to corresponding directed graph. Many results for graph algebras transfer to k-graph C*-algebras, however some new results indicate that the class of k-graph C*-algebras is much larger than the class of graph algebras.



6¿ù 11ÀÏ ¼¼¹Ì³ª ÈÄ, Á¡½É½Ã°£¿¡ ±³³»¿¡¼­ ÀÛ¿ë¼Ò °³°­È¸½ÄÀÌ ÀÖ½À´Ï´Ù.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.345. (2010.06.07)



¿¬»ç: ÀÌÀÎÇù(ÀÌÈ­¿©´ë)

Á¦¸ñ: A homology theory for one-dimensional genralized solenoids

ÀϽÃ: 2010³â 6¿ù 11ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£



6¿ù 11ÀÏ ¼¼¹Ì³ª ÈÄ, Á¡½É½Ã°£¿¡ ±³³»¿¡¼­ ÀÛ¿ë¼Ò °³°­È¸½ÄÀÌ ÀÖ½À´Ï´Ù.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.344. (2010.05.31)



¿¬»ç: À±ÀÚ»ó(University of Texas, Pan-American)

Á¦¸ñ: Open problems in multivariable weighted shifts

ÀϽÃ: 2010³â 6¿ù 4ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£


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ÀÛ¿ë¼Ò ¼Ò½Ä No.343. (2010.05.24)



¿¬»ç: Àå¼±¿µ(¿ï»ê´ë)

Á¦¸ñ: Generalized Toeplitz algebras of strong perfprated semigroup

ÀϽÃ: 2010³â 5¿ù 28ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: 27µ¿ 414È£

ÃÊ·Ï: We will study a Wiener-Hopf operators and $C^*$-generated by Wiener-Hopf operators.



À̹ø ÁÖ ¼¼¹Ì³ª Àå¼Ò´Â ¼­¿ï´ë ¼®¹Ú»ç ±¸¼ú°í»ç·Î ÀÎÇØ 27µ¿ 414È£·Î º¯°æµÇ¾ú½À´Ï´Ù.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.342. (2010.05.09)



¿¬»ç: ±ÇÇö°æ(¼­¿ï´ë)

Á¦¸ñ: The similarity problem in the Bergman space setting

ÀϽÃ: 2010³â 5¿ù 14ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£

ÃÊ·Ï: In this talk, I will point out some of the obstacles one faces when one tries to extend the similarity characterization that holds in the Hardy space to the Bergman space and discuss ways to overcome these problems.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.341. (2010.05.01)



¿¬»ç: ÀÌÇöÈ£(¼­¿ï´ë)

Á¦¸ñ: Laplacian on non-commutative manifold

ÀϽÃ: 2010³â 5¿ù 7ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£

ÃÊ·Ï: The Laplacian operator on a Riemannian manifold is one of the most fundamental elliptic operator. Generally, it is defined on forms on $(M,g)$ where $M$ is a (compact) connected oriented Riemannian manifold and g is a Riemannian metric. The famous Hodge theorem says that there exists an orthonormal basis of L^2 space of k-forms consisting of eigenforms of the Laplacian on k-forms. Each eigenvalue has finite multiplicity, and the eigenvalues accumulates only at infinity. In this talk, I will introduce a setting from which we can define the Laplacian and demonstrate that it is real Laplacian if a C*-algebra in the setting is not so non-commutative.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.340. (2010.04.18)



¿¬»ç: °­µ¿¿À(¼­¿ï´ë)

Á¦¸ñ: Hyponormality of Block Toeplitz operators with circulant symbols

ÀϽÃ: 2010³â 4¿ù 23ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£



4¿ù 30ÀÏ¿¡ ¿¹Á¤µÇ¾î ÀÖ´ø ÀÌÇöÈ£ ¼±»ý´ÔÀÇ °­¿¬Àº ¼­¿ï´ë ¼ö¸®°úÇкΠMath Encounter °ü°è·Î 5¿ù 7ÀÏ·Î ¿¬±âµÇ¾ú½À´Ï´Ù


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ÀÛ¿ë¼Ò ¼Ò½Ä No.339. (2010.04.11)



¿¬»ç: ÇãÀ缺(ÇѾç´ë)

Á¦¸ñ: CP instrument and probability operator

ÀϽÃ: 2010³â 4¿ù 16ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£


4¿ù 30ÀÏ¿¡ ¿¹Á¤µÇ¾î ÀÖ´ø ÀÌÇöÈ£ ¼±»ý´ÔÀÇ °­¿¬Àº ¼­¿ï´ë ¼ö¸®°úÇкΠMath Encounter °ü°è·Î 5¿ù 7ÀÏ·Î ¿¬±âµÇ¾ú½À´Ï´Ù


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ÀÛ¿ë¼Ò ¼Ò½Ä No.338. (2010.04.03)



¿¬»ç: Vu Quoc Phong(Ohio Univ)

Á¦¸ñ: Stability and almost periodicity of semigroups of operators, and applications

ÀϽÃ: 2010³â 4¿ù 9ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£


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ÀÛ¿ë¼Ò ¼Ò½Ä No.337. (2010.04.02)



¿¬»ç: ÇÑ°æÈÆ(¼­¿ï´ë)

Á¦¸ñ: Matrix regular operator space and operator system

ÀϽÃ: 2010³â 4¿ù 2ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£


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ÀÛ¿ë¼Ò ¼Ò½Ä No.336. (2010.03.21)



¿¬»ç: ³²°è¼÷(¼­¿ï´ë)

Á¦¸ñ: Compactness of Toeplitz operator on harmonic Bergman spaces

ÀϽÃ: 2010³â 3¿ù 26ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£


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ÀÛ¿ë¼Ò ¼Ò½Ä No.335. (2010.03.12)



¿¬»ç: ÀÌÈÆÈñ(ÃæºÏ´ë)

Á¦¸ñ: Hypercontractivity on the q-Araki-Woods algebras: the general case

ÀϽÃ: 2010³â 3¿ù 19ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£

ÃÊ·Ï: We consider the hypercontractivity of the q-Ornstein-Uhlenbeck semigroup on the q-Araki-Woods algebras. This result is an extension of Biane's result on the tracial case, but we focus on the non-tracial case here. Although we were not able to obtain the optimal time for the hypercontractivity, we get a result with the same order as the tracial case.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.334. (2010.03.05)



¿¬»ç: LeRoy Beasley (Utah State University)

Á¦¸ñ: The Characterization of Operators Preserving Primitivity for Matrix $k$-Tuples

ÀϽÃ: 2010³â 3¿ù 12ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£

ÃÊ·Ï: We obtain a complete characterization of surjective additive operators acting on the Cartesian product of several matrix spaces over an antinegative semiring without zero divisors, which map primitive matrix $k$-tuples to primitive matrix $k$-tuples.



-À̹øÇб⠼¼¹Ì³ª ½Ã°£Àº Áö³­ Çбâ¿Í °°ÀÌ ¿ÀÀüÀÔ´Ï´Ù. Àå¼Òµµ ¶È°°ÀÌ »ó»ê°ü 301È£ ÀÔ´Ï´Ù.


-3¿ù 12ÀÏ ¼¼¹Ì³ª ÈÄ, Á¡½É½Ã°£¿¡ ±³³»¿¡¼­ ÀÛ¿ë¼Ò °³°­È¸½ÄÀÌ ÀÖ½À´Ï´Ù.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.333. (2010.03.03)



¿¬»ç: LeRoy Beasley (Utah State University)

Á¦¸ñ: The Characterization of Operators Preserving Primitivity for Matrix $k$-Tuples

ÀϽÃ: 2010³â 3¿ù 12ÀÏ ±Ý¿äÀÏ 10½Ã 30ºÐ

Àå¼Ò: »ó»ê°ü 301È£

ÃÊ·Ï: We obtain a complete characterization of surjective additive operators acting on the Cartesian product of several matrix spaces over an antinegative semiring without zero divisors, which map primitive matrix $k$-tuples to primitive matrix $k$-tuples.



-À̹øÇб⠼¼¹Ì³ª ½Ã°£Àº Áö³­ Çбâ¿Í °°ÀÌ ¿ÀÀüÀÔ´Ï´Ù. Àå¼Òµµ ¶È°°ÀÌ »ó»ê°ü 301È£ ÀÔ´Ï´Ù.


-3¿ù 12ÀÏ ¼¼¹Ì³ª ÈÄ, Á¡½É½Ã°£¿¡ ±³³»¿¡¼­ ÀÛ¿ë¼Ò °³°­È¸½ÄÀÌ ÀÖ½À´Ï´Ù.


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ÀÛ¿ë¼Ò ¼Ò½Ä No.332 (2010.1.8)



¿¬»ç: Uwe Frantz (University of Franche-Comte)

Á¦¸ñ: Compact quantum groups, (1) Introduction (2) Examples

ÀϽÃ: 2010³â 1¿ù 12ÀÏ È­¿äÀÏ 14½Ã

Àå¼Ò: ¼ö¸®°úÇкΠ27µ¿ 318È£


¿¬»ç: Kalyan B. Sinha (Indian Institute of Science)

Á¦¸ñ: Krein's theorem and A Pair of Projections

ÀϽÃ: 2010³â 1¿ù 12ÀÏ È­¿äÀÏ 16½Ã

Àå¼Ò: ¼ö¸®°úÇкΠ27µ¿ 318È£


¿¬»ç: Uwe Frantz (University of Franche-Comte)

Á¦¸ñ: Compact quantum groups, (3) The Haar state (4) Probability

ÀϽÃ: 2010³â 1¿ù 13ÀÏ ¼ö¿äÀÏ 14½Ã

Àå¼Ò: ¼ö¸®°úÇкΠ27µ¿ 318È£


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ÀÛ¿ë¼Ò ¼Ò½Ä No.331 (2010.1.2)



¿¬»ç: Marius Junge (Univ. of Illinois)

Á¦¸ñ: Operator algebras and Quantum information

ÀϽÃ: 2010³â 1¿ù 4ÀÏ ¿ù¿äÀÏ 16½Ã

Àå¼Ò: »ó»ê°ü 301È£

ÃÊ·Ï: Operator algebras and Quantum information theory have a lot in common, and this connection is growing in importance. I will try to sketch how free probability theory and operator space theory can be used to attack a problem in Quantum Information theory. This talks includes in introduction to the relevant terminology and, if time permits, and outlook on ongoing research in this direction.


¿¬»ç: Uwe Frantz (University of Franche-Comte)

Á¦¸ñ: Compact quantum groups, (1) Introduction (2) Examples

ÀϽÃ: 2010³â 1¿ù 12ÀÏ È­¿äÀÏ 14½Ã

Àå¼Ò: ¼ö¸®°úÇкΠ27µ¿ 318È£


¿¬»ç: Uwe Frantz (University of Franche-Comte)

Á¦¸ñ: Compact quantum groups, (3) The Haar state (4) Probability

ÀϽÃ: 2010³â 1¿ù 13ÀÏ ¼ö¿äÀÏ 14½Ã

Àå¼Ò: ¼ö¸®°úÇкΠ27µ¿ 318È£