MEI Decision 1 Graph Types

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  • Created by: Caraa
  • Created on: 02-06-13 13:43
Bipartite
Two sets of vertices
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Networks
Have numbers on each arc
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Digraphs
Edges have directions
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Complete
All vertices are connected to every other vertex
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Simple
No loops or multiple edges
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Connected
All vertices can be reached from all vertices
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Subgraphs
Parts of other graphs
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A Path
A route that doesn't repeat any vertices
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A Cycle
Path that brings you back to your starting point
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A Hamilton Cycle
A cycle that goes through every vertex once
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A Walk
Any route on a graph
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A Trail
A walk that doesn't repeat any edges
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Tree
Graphs that have no cycles
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Spanning Tree
Subgraphs that are trees
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Planar
Arcs only cross at vertices
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Conditions for an algorithm
Finite
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The order
Tells you how fast it is (can be quadratic, cubic etc...)
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The size
Number of inputs eg number of items in the list
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Sum of the orders on a graph equals...
double the number of edges
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Transversable means?
You can get from any vertex to any other by covering all arcs only once
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Two odd
Semi-transverable. There is a route between the two
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More than two odd
Non transverscable
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All even
Transverable. There is a route between all
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Kruskals?
Ascending order
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Early event time?
Earliest you can reach an event
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Late event time?
Latest you can reach an event without increasing the duration of the whole project
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What does the minimum completion time assume?
Unlimited resources
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Float time
How long an activity can be delayed for if the project is to be completed on time. Late finish - duration - early start
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Independent float time
Amount you can delay the activity for all activities before to start as late as possible and all after to start as early. early finish - duration - late start
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Other cards in this set

Card 2

Front

Networks

Back

Have numbers on each arc

Card 3

Front

Digraphs

Back

Preview of the front of card 3

Card 4

Front

Complete

Back

Preview of the front of card 4

Card 5

Front

Simple

Back

Preview of the front of card 5
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