Graph families | Graph minor theory

Petersen family

In graph theory, the Petersen family is a set of seven undirected graphs that includes the Petersen graph and the complete graph K6. The Petersen family is named after Danish mathematician Julius Petersen, the namesake of the Petersen graph. Any of the graphs in the Petersen family can be transformed into any other graph in the family by Δ-Y or Y-Δ transforms, operations in which a triangle is replaced by a degree-three vertex or vice versa. These seven graphs form the forbidden minors for linklessly embeddable graphs, graphs that can be embedded into three-dimensional space in such a way that no two cycles in the graph are linked. They are also among the forbidden minors for the YΔY-reducible graphs. (Wikipedia).

Petersen family
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PORSCHE MOTORSPORT | VINTAGE RACING FOOTAGE

This amazing Porsche racing footage is from the Petersen Archive and feature a 356 racing with multiple views. Check out more Petersen Videos and tours: https://www.youtube.com/channel/UC7l9_nNV7JWaSnNMqNjTEAQ Don’t miss any of our upcoming videos. Subscribe here: https://bit.ly/2OKoSM2

From playlist UNSEEN ARCHIVAL VIDEOS

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The History of the Automobile

Cars have been with us for over a century (or longer, depending on when you start). Join us as we briefly explore the evolution of the automobile.

From playlist Activities for your Little Racers | Petersen Education

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The Worlds Best Automotive Museum | Petersen Automotive Museum

The Petersen Automotive Museum is located on Wilshire Boulevard along Museum Row in the Miracle Mile neighborhood of Los Angeles. One of the world's largest automotive museums, the Petersen Automotive Museum is a nonprofit organization specializing in automobile history and related educati

From playlist Documentaries

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1 OF 1 | THE CORWIN GETAWAY

Today, Chief Historian of the Petersen Automotive Museum, goes deep into the history of the 1969 Corwin Getaway. The Corwin was designed and built by Cliff Hall, chief photographer for the African-American newspaper the Los Angeles Sentinel. The Corwin represents an early effort to develop

From playlist Petersen Deep Dives

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THE NEW MOTORSPORTS VAULT | PETERSEN MUSEUM VAULT TOUR

The Petersen Automotive Museum just finished its renovation on its Speed Shop! Discover the best of the Petersen's Motorsports collection including Indy cars, Nascars, Sports cars, Can Am vehicles, and even a solar and electric powered racer! Check out more Petersen Videos and tours: http

From playlist The Petersen Automotive Museum Vault

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BMW & THE STORY OF THE 2002 | BMW 2002

Discover the story of BMW and it's rich history in making cars, motorcycles and airplanes. BMW has broken records not just with it's automobiles but with it's engines and airplanes in the early 1900's. BMW's breakthrough car in the United States was its BMW 2002, that redefined performan

From playlist Automotive Deep Dives | History of Car Brands

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Mass Production | Everything You NEED to Know | Petersen Education

Learn how innovations in automotive production revolutionized industry and allowed the car to take center stage.

From playlist Activities for your Little Racers | Petersen Education

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ENTIRE HISTORY OF THE PETERSEN AUTOMOTIVE MUSEUM | BOB PETERSEN & HOT ROD

Have you ever wondered how the Petersen Automotive Museum came to be? Celebrating the museums 27th anniversary, Laura Fisher takes you through the entire history of the museum. Founded on June 11, 1994, by magazine publisher Robert E. Petersen and his wife Margie, the $40-million Petersen

From playlist Petersen Unboxing

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METALLICA'S JAMES HETFIELD'S | CAR COLLECTION

Visit the Hetfield collection in person- go to Petersen.org for tickets and info. For a full gallery walkthrough - watch : https://www.youtube.com/watch?v=6UnYp17FPbU In 2019, James Hetfield donated his car collection to the Petersen Automotive Museum. James has always been a car guy and

From playlist Ultimate Collection Tours | World's Rarest Cars

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PETERSEN GLOBAL CARS AND COFFEE | JUNE 2020

#carsandcoffee #petersenautomotivemuseum A Huge thank you to Omaze for making our cars & coffee possible SUBMIT YOUR CAR TO OUR FATHERS DAY SHOW - https://bit.ly/3ggvgHf Discover the Petersen's Global Cars and Coffee! Every two weeks, the museum features over an hour of car stories from

From playlist Ultimate Collection Tours | World's Rarest Cars

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Petersen Global Cars & Cofee | July 5

#carsandcoffee #carshow #autoshow SUBMIT YOUR CAR TO THE NEXT mlm SHOW - https://bit.ly/3ggvgHf Discover the Petersen's Global Cars and Coffee! Every two weeks, the museum features over an hour of car stories from around the world! This is truly an international car show. During the video

From playlist Ultimate Collection Tours | World's Rarest Cars

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THE RAREST BUGATTI IN EXISTENCE? | 1939 Bugatti Type 57C Atalante

#luxurycars #classiccars #Bugattis equal speed, beauty, and exclusivity. The driving principle behind the designs of Ettore Bugatti and his son Jean Bugatti not only tested the engineering capabilities of their time, but also exemplified the extravagance of the Art Deco style. Dive into

From playlist The Petersen Automotive Museum Vault

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American Restoration: Petersen Automotive Museum's 1913 Mercer | History

Bodie delves into the Petersen vault and shows us a 1913 Mercer, the world%uFFFD%uFFFDs first supercar, in this web exclusive. #AmericanRestoration Subscribe for more from American Restoration and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show

From playlist American Restoration | Official Series Playlist | History

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POST WAR VAULT TOUR

#car collection #presidential Enjoy the follow-up to our pre-war tour with this post-war Petersen Vault Tour. This video covers the Petersen Automotive Museum's exclusive underground vault. In this video you will see everything from Ferraris, Porsches, Hot Rods, Presidential Videos, and

From playlist Ultimate Collection Tours | World's Rarest Cars

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THE JAMES HETFIELD COLLECTION | FULL TOUR

Experience the James Hetfield Collection at the Petersen. Purchase tickets here: https://www.petersen.org/ In 2019, James Hetfield donated his car collection to the Petersen Automotive Museum. James has always been a car guy and shares his car journey to one of the coolest custom car coll

From playlist Ultimate Collection Tours | World's Rarest Cars

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HOT ROD TRIBUTE | GEORGE BARRIS | BARRIS KUSTOMS

NOW LIVE on Petersen’s YouTube Channel – Barris Shop Tour, where you meet the Barris Family and get a glimpse into the Barris Shop, Legacy, George’s Life, and how Petersen's Publication of Hot Rod Magazine played a huge role into making the Kustom Culture we all love truly one-of-a-kind.

From playlist Petersen Car Week | The World's Largest Automotive Event is Now Online!

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METALLICA'S JAMES HETFIELD'S CAR COLLECTION

In 2019, James Hetfield donated his car collection to the Petersen Automotive Museum. James has always been a car guy and shares his car journey to one of the coolest custom car collections around. Hetfield, has described seeing cars in the same way he sees music: as forms of freedom and

From playlist Ultimate Collection Tours | World's Rarest Cars

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Driving with Dana, featuring the 1929 DuPont Model G Speedster

On this episode of Driving with Dana, we find out how the 1929 DuPont Model G Speedster qualified to race at Le Mans while pushing it to the (legal) limit on the streets of Los Angeles. Enjoy! Check out more Petersen Videos and tours: https://www.youtube.com/channel/UC7l9_nNV7JWaSnNMqNjTE

From playlist Automotive Deep Dives | History of Car Brands

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WORST CAR FAILURES OF ALL TIME | PETERSEN TOUR

Experience the Vault inperson : Book your tickets today | https://www.petersen.org/ On today's Petersen Vault tour, we explore the industry's failures. Reliability, 3-wheels, cost, and many other factors went into these vehicles failing in the industry. All of them were observed by the ind

From playlist The Petersen Automotive Museum Vault

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HOT RODDER'S PARADISE | INSIDE THE PETERSEN VAULT

Journey into the Petersen Automotive Museum's vault and tour its amazing collections of Hot Rods and customs. Enjoy everything from one of a kind AMBR (america's most beautiful roadster) to some of the most iconic customs of all time. On the tour you will see the McGee Roadster, the firs

From playlist The Petersen Automotive Museum Vault

Related pages

Multigraph | Graph theory | Julius Petersen | Petersen graph | Complete bipartite graph | Horst Sachs | Robin Thomas (mathematician) | Complete graph | Planar graph | Cycle (graph theory) | Star (graph theory) | Y-Δ transform | Link (knot theory) | Wagner's theorem | Euclidean space | Apex graph | Robertson–Seymour theorem | Linkless embedding