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Topic: Robert Ammann

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	Robert Ammann - Definition, explanation
		Robert Ammann (October 1, 1946-May, 1994) was an amateur mathematician who made several significant and groundbreaking contributions to the theory of quasicrystals and aperiodic tilings.
		After ten years, his position was eliminated as part of a routine cutback, and Ammann ended up working as a mail sorter for the post office.
		The discovery of quasicrystals in 1982 elevated the status of aperiodic tilings, and Ammann's work, from mere recreational mathematics to an important application.
	www.calsky.com /lexikon/en/txt/r/ro/robert_ammann.php (347 words)

	American Mathematical Society :: Feature Column
		In the early 1970's, Roger Penrose and Robert Ammann independently found sets of tiles with considerably fewer tiles.
		As a final means of representing the matching rules, Ammann discovered that the rhombs could be decorated with what are now called Ammann bars.
		The matching rules are enforced by requiring that the bars on adjacent tiles fit together to form five families of parallel lines.
	www.ams.org /featurecolumn/archive/penrose.html (2704 words)

	Interview with Robert Ammann, Founders Asset Management: TWST
		ROBERT T. AMMANN is a Vice President of Investments and Senior Portfolio Manager for Founders Asset Management
		Ammann: A bottom-up approach starts with the idea first, and then we put it through the required characteristics for ownership.
		Ammann: That one is as relatively obscure as it gets.
	www.twst.com /notes/articles/kas505c.html (667 words)

	Robert Ammann at AllExperts
		Robert Ammann (October 1, 1946 - May, 1994) was an amateur mathematician who made several significant and groundbreaking contributions to the theory of quasicrystals and aperiodic tilings.
		Ammann attended Brandeis University, but generally did not go to classes, and left after three years.
		Ammann wrote a letter to Gardner, describing his own work, which duplicated one of Penrose's sets, plus a foursome of "golden rhombohedra" that formed aperiodic tilings in space.
	en.allexperts.com /e/r/ro/robert_ammann.htm (358 words)

	Penrose Tilings
		Robert Berger showed in 1964 that Wang’s conjecture was false, and found a set of 20,000 Wang dominoes that tiled only non-periodically.
		He was later able to reduce this number to 104, and Donald Knuth found a set of 92 Wang dominoes that tiled non-periodically.
		Raphael Robinson and Robert Ammann found different sets of six tiles that force non-periodic tiling, and although it has not been proven, it is strongly believed that this is the smallest number of square shaped tiles that will force non-periodic tiling.
	intendo.net /penrose/info.html (622 words)

	North Jersey Media Group providing local news, sports & classifieds for Northern New Jersey! (Site not responding. Last check: 2007-11-01)
		Ammann was hired to help build the Hell Gate Bridge, which was for a time the world's longest steel arch bridge.
		Ammann was initially a fervent believer in the project, but New York City officials disliked its location in busy midtown and soured on its cost.
		Ammann saw the chance for a suspension bridge farther uptown, in the gulf between New Jersey's Palisades and Washington Heights.
	www.northjersey.com /page.php?qstr=eXJpcnk3ZjczN2Y3dnFlZUVFeXk2MDYmZmdiZWw3Zjd2cWVlRUV5eTcwMDgwNjgmeXJpcnk3ZjcxN2Y3dnFlZUVFeXky (1187 words)

	CSENT-Related Publications
		Ammann, C.M., G. Meehl, W.M. Washington, and C.S. Zender, 2003: A monthly and latitudianlly varying volcanic forcing dataset in simulations of 20th century climate.
		Ammann, C.M., P. Naveau, H.-S. Oh, F. Joos, S. Gerber, D.S. Schimel, and B.L. Otto-Bliesner, 2003: Multi-resolution methods for extracting fingerprints of external forcing during the last Millennium from model and proxy data.
		Wahl, E.R., C.M. Ammann, 2003: Using AOGCM output to assess the performance of teleconnection patterns derived from climate proxies.
	www.cgd.ucar.edu /ccr/ammann/CSENT/publications.html (699 words)

	TimesDispatch.com \| A plane crash, a fire, an infant -- and a hero (Site not responding. Last check: 2007-11-01)
		Ammann was under the supervision of a more experienced airman, Lt. Ed Bristol, who piloted a second jet.
		Ammann was flying "sightless," using only instruments to guide the plane while working under a visual barrier that prevented seeing outside.
		Ammann ejected from the jet, while Bristol flew his less damaged craft back to Oceana Naval Air Station in Virginia Beach, where the training exercise had originated.
	www.timesdispatch.com /servlet/Satellite?pagename=RTD/MGArticle/RTD_BasicArticle&c=MGArticle&cid=1031782026615&path=!news!columnists&s=1045855935174 (930 words)

	Aperiodic Tilings
		A variation on this technique is Ammann Bars, lines that continue straight across tile edges.
		Robert Ammann discovered a number of aperiodic tilings, which are described in Grunbaum and Shephard's Tilings and Patterns.
		In the Ammann tiling at left, there are two shapes of tiles (plus a third key tile).
	www.uwgb.edu /dutchs/symmetry/aperiod.htm (967 words)

	Robert Ammann: ZoomInfo Business People Information (Site not responding. Last check: 2007-11-01)
		Ammann joined Founders as a research analyst in 1993 and became a senior research analyst in 1996.
		Rob Ammann, CFA, is a vice president of investments and senior portfolio manager for Founders Asset Management LLC.
		Ammann also served as portfolio manager for Frontier Fund from February 1999 until its merger with Discovery Fund in August 1999.
	www.zoominfo.com /directory/Ammann_Robert_898346.htm (423 words)

	990824TU: Robert Ammann, Founders Discovery Fund
		In a year that has most portfolio managers in a cold sweat, Robert T. Ammann is a happy camper.
		At the close of June, his Founders Discovery Fund was up 26 percent; nearly double the returns of both the SandP 500 Index and his bogey, the Russell 2000 index.
		Ammann to tell me how he manages the fund.
	www.wcnc.com /s/dws/bus/scottburns/columns/archives/1999/990824TU.htm (724 words)

	Aperiodic Tilings Within Conventional Lattices (Site not responding. Last check: 2007-11-01)
		These tiles can be reflected and rotated; for the Ammann tiling, only one piece needs to be able to undergo 90 degree rotations, the last one.
		Another tiling devised by Robert Ammann is this one, in which the ratios between sides of different length of the pieces are the golden ratio or its powers:
		This is an example of a phenomenon known as Ammann bars, which will be discussed in the case of the Penrose tiling later on.
	www.quadibloc.com /math/til03.htm (483 words)

	990824TU: Robert Ammann, Founders Discovery Fund
		In a year that has most portfolio managers in a cold sweat, Robert T. Ammann is a happy camper.
		At the close of June, his Founders Discovery Fund was up 26 percent; nearly double the returns of both the SandP 500 Index and his bogey, the Russell 2000 index.
		Ammann to tell me how he manages the fund.
	www.dallasnews.com /s/dws/bus/scottburns/columns/archives/1999/990824TU.htm (724 words)

	Heesch number
		The Heesch number of a shape is the maximum value of k for which all tiles in the k-th corona of any tiling are congruent to that shape.
		For a long time the record holder for the largest finite value of k was a shape found by the American computer scientist Robert Ammann, which consisted of a regular hexagon with small projections on two sides and matching indentations on three sides.
		This was thought to have a Heesch number of three; however, in 2000, Alex Day argued that the Ammann hexagon actually has a Heesch number of four, though there is a dispute about whether the difference has to do with a definition of tiling.
	www.daviddarling.info /encyclopedia/H/Heesch_number.html (490 words)

	Aperiodic Tilings
		For a long time it was believed that all sets of tiles that covered the plane must tile periodically, but in 1964 Robert Berger found a set of tiles that do not.
		This is one of Ammann's tilings with bars shown in color.
		The tile edges also align to form straight lines, but sooner or later there is some interruption to the pattern.
	www.uwsp.edu /geo/projects/geoweb/participants/dutch/symmetry/aperiod.htm (979 words)

	Robert Ammann Offset Ammann, 8154 Oberglatt ZH - druckerei, offsetdruckerei - swissguide.ch
		Robert Ammann Offset Ammann, 8154 Oberglatt ZH - druckerei, offsetdruckerei - swissguide.ch
		Robert Ammann Offset Ammann, 8154 Oberglatt ZH Swissguide-ID: 1453446
		Last modification: Sat, 17 Feb 2007 15:39:15 GMT
	www.swissguide.ch /de/Druckerei-Papier-Siebdruck-Beschriftung/Oberglatt-ZH/1453446_robertammannoffsetammann.html (29 words)

	FundAlarm-Archive of Manager Changes
		Robert Turner remains as lead manager, assisted by continuing co-managers Mark Turner and Robb Parlanti.
		AIM Premier Equity: Robert Shelton is removed as lead manager, after less than year on the job, and Ronald Sloan takes his place.
		Dreyfus Premier Enterprise: Comanager Robert Ammann will resign from his employer, Founders, on May 14, 2004, and he'll be gone from this fund, too.
	fundalarm.com /arcchgs.htm (17875 words)

	Method for elimination of spatial artifacts in digital imaging - Patent 6833932
		One unique aperiodic but non-random pattern is Ammann tiles, named after Robert Ammann, one of the discoverers of these tiles.
		In order to be classified as aperiodic, and therefore as Ammann tiles, these dimensions must relate to each other in a specific manner.
		This Ammann tiling scheme is just one example of these types of non-periodic but non-random tiling schemes.
	www.freepatentsonline.com /6833932.html?highlight=5557709 (2880 words)

	Reprinted by Permission of Dow Jones WebReprint Service®, 1-800-843-0008
		Robert J. Sullivan, manager of the No. 2-ranked Satuit Capital Micro Cap fund, is a bit like PGA Tour rookie Ben Curtis, the improbable winner of this year's British Open.
		Ammann, 33, who grew up in Denver, knew early on that he wanted to follow in his father's footsteps and enter the money-management business.
		No.2-ranked Robert Sullivan, of Satuit Capital Micro-Cap fund, scored 31.30, followed by Grizzly Short, with a rating of 28.39.To be sure, the system has its limitations, not least the fact that it can be biased by short-term performance.
	webreprints.djreprints.com /810280545599.html (3410 words)

	Antiques: Decorative Americana, Sharon Connally Ammann Specially Commissioned Bronze Bust. A life-sized bronze bust of ...
		Ammann has done many portrait sculptures including a life-sized full figure of Gov. Connally that stands in Connally Plaza in Heritage Park in downtown Houston; a life-sized full figure sculpture of former Texas Lt. Gov.
		Bob Bullock, which stands at the entrance to the Texas State Museum in Austin, Texas; and a life-sized sculpture of a student sitting on a bench commissioned by the Morris Atlas family, which sits outside the entrance to the Texas Ex-Students' Association building.
		Ammann has also sculpted life-sized bronze busts of, among others, former First Lady Lady Bird Johnson, former Congressman J.J. "Jake" Pickle, former Houston Mayor Bob Lanier, a bust of former Gov. Connally that sits in the Connally Building at the U.T.School of Law, former Texas First Lady Nellie Connally, and numerous others.
	americana.ha.com /common/view_item.php?Sale_No=644&Lot_No=1050&src=pr (1007 words)

	AG Globale Analysis und Differentialgeometrie -- Preprints (Site not responding. Last check: 2007-11-01)
		Bernd Ammann, Robert Lauter, Victor Nistor, Andras Vasy, Complex powers and non-compact manifolds, Hamburger Beiträge zur Mathematik, no. 168, to appear in Comm.
		Bernd Ammann, Robert Lauter, Victor Nistor, On the geometry of Riemannian manifolds with a Lie structure at infinity, Hamburger Beiträge zu Mathematik, no. 146, to appear in Int.
		Bernd Ammann, Ambient Dirac eigenvalue estimates and the Willmore functional, in: O.~Hijazi (ed.), Proceedings of the Congress ``The Dirac operators and its applications'' at Beirut, Lebanon, 2001.
	www.math.uni-hamburg.de /home/ammann/ag/preprints.html (410 words)

	[No title]
		She was preceded in death by her husband, Nolan, who died on Nov. 19, 1980; three brothers: William, Robert and Kenneth Wanner; and her parents, Christian and Wilhemine.
		He is survived by his son, Tedd, of Woodbury, Minn.; his brothers and sisters: Janice Culbreth, Tony and Dora Ammann, Rita and Maynard Swanson, James Ammann, Frank and Pat Ammann, Susan Ammann, Mary Odman, John Ammann, Helen Amman, Antoinette Johnson, Duane and Kim Ammann, Robert Ammann, and Ted Ammann; and many nieces, nephews and friends.
		She is survived by her children: James and Joan of Prescott, Joseph and Inez of San Diego, Robert and Kathleen of Prescott, Richard and Sheri of Sycamore, Ill., Mary and David Thoen of River Falls, and William and Virginia of Prescott; 17 grandchildren; 17 great-grandchildren; nieces, nephews and many friends.
	www.rivertowns.net /public/rfjrival/week48/frontpage/np/NTKNA01.HTM (1667 words)

	AMMANN family history and genealogy information .. Ammann ancestry links
		OVERVIEW -- As this genealogical help and research area is a new part of our website, and is currently under development..
		genealogy software and family history research database for the Ammann name will likely be included in the updates along with an automated form to submit data for Ammann family history..
		posting surname and ancestry data for Ammann items as well as allowing the public to search for Ammann details will remain free of charge.
	www.museumstuff.com /zg.cgi?w=ammann (192 words)

	Penrose tiling at AllExperts
		A Penrose tiling is pattern of tiles, discovered in 1973 by mathematical physicist Roger Penrose and around the same time by amateur mathematician Robert Ammann, which could completely cover an infinite plane, but only in a pattern which is non-repeating (aperiodic).
		That it must be possible to tile the plane aperiodically was first proven as a general proposition in 1966 by Robert Berger, who shortly thereafter invented the first aperiodic set of tiles, consisting of 20426 distinct tile shapes.
		The number of shapes in a set of aperiodic tiles was quickly reduced by others, reaching its current pinnacle in Penrose tiles, the smallest sets of which require only two different shapes.
	en.allexperts.com /e/p/pe/penrose_tiling.htm (786 words)

	13 Dec 2002
		Robert Ammann's Golden-b aperiodic tiling system, and I'm also wondering if there is a nice proof that they are 3-colorable.
		Mathematician Robert Bosch of Oberlin College has a nice algorithm for optimizing pictures with domino sets, as seen at www.dominoartwork.com.
		Robert Reid asked me to look at Leslie Shader's solution to his Plunk puzzle more closely -- it's quite nice.
	www.mathpuzzle.com /13Dec2002.html (1994 words)

	Heesch's Tiling Problem American Mathematical Monthly, The - Find Articles (Site not responding. Last check: 2007-11-01)
		In that same year a hexagon with notched edges (Figure 3) having Heesch number 3 that had been discovered by Robert Ammann was presented at a special session on tiling at a regional AMS meeting in Philadelphia (and was featured on the cover of the meeting program) [17], [18].
		To see this, one could simply enumerate all of the possibilities and check each case individually, but there is an interesting phenomenon at play here that is worth investigating.
		The reason that Ammann's tile cannot tessellate the plane is that it is combinatorially unbalanced-it has more nicks than bumps.
	www.findarticles.com /p/articles/mi_qa3742/is_200406/ai_n9452479 (748 words)

	Miscellaneous Pierce County, WI, Obituaries
		Leier is survived by his parents, Ron and Claudia Leier of New Richmond; son, Michael of Rice Lake; one sister and brother-in-law, Christina and Robert Ennis of New Richmond; grandparents, Wesley and Donnalda Christenson of Amery and August and Dorothy Leier of Somerset; and three nephews, Joshua, Zachary and Andrew.
		The funeral was held Oct. 4 at the United Methodist Church in New Richmond with the Revs.
		Lynette Marie Meyer, 32, of Baldwin, and formerly of Roberts, died Friday, Nov. 6, 1998, at The Lutheran Home: River Falls, where she had resided for the past 2 weeks.
	www.obitcentral.com /obitsearch/obits/wi/wi-pierce6.htm (4350 words)

	County Obituaries A-E \| The San Diego Union-Tribune
		She was born in Vancouver, B.C., and was a dispatcher for BC Telephone Co. in Canada.
		Survivors include her husband, Robert Ammann; stepsons, David Ammann of Lemon Grove and Timothy Ammann of Seattle; sister, Mary Nichol of W. Vancouver, B.C.; and four grandchildren.
		He was born in Ohio and was a librarian at public libraries in California and Ohio.
	www.signonsandiego.com /uniontrib/20060527/news_1m27obitae.html (504 words)

	[No title]
		Allan Rob Allan Robert Allan Robert J. Allan Rod Allan Stephen J. Allan Tony Allan Vicki H. Allan John J. Allan III Jefferey Allanach Lorène Allano Remi Allanou Jennifer Allanson Paul Allanson Hamid Allaoui Rabha Allaoui Alberto Allara Dan Allard Dennis G. Allard Francois Allard Géraud Allard Gillian Allard J.
		Allard Robert Allard Suzanne L. Allard Suzie Allard Terry Allard William K. Allard Yannick Allard Gianluca Allaria R.
		Robert Almond James C. Almond Jim Almond John Almond Robert Almond Russell Almond Sana'a Almoumen George Almpanidis Andreas Almquist Justin Almquist Kenneth Almquist Fredrik Almqvist Markus van Almsick Werner van Almsick Linda G. Almstead Michael Almstetter Vicki L. Almstrum Hussein Almuallim Anthony Almudevar Sultan Almuhammadi Wahab Almuhtadi Ahmad Almukdad Sobeeh Almukhaizim A.
	www.vldb.org /dblp/db/indices/AUTHORS (16736 words)

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