This is precisely the Nonogram-type description a1, a2, ...,a, for a line (row or column). Note that it has length 2r +1 and can also be written as oʻ1ª*o+1®°0+ ...1ªo*. We denote the set of all Nonogram-type descriptions by Daonogran C D. In the sequel we will concentrate on this type of description. Let s be a finite string over I. If zero or more occurrences of x are replaced with elements from E, the resulting string is called a specification of s. A specification to a string over E (i.e., no longer containing any "x" symbols) is called a fir. If a string s has a fix that adheres to a given description d, s is called firable with respect to d. By definition, the boolean function Fir(s,d)
This is precisely the Nonogram-type description a1, a2, ...,a, for a line (row or column). Note that it has length 2r +1 and can also be written as oʻ1ª*o+1®°0+ ...1ªo*. We denote the set of all Nonogram-type descriptions by Daonogran C D. In the sequel we will concentrate on this type of description. Let s be a finite string over I. If zero or more occurrences of x are replaced with elements from E, the resulting string is called a specification of s. A specification to a string over E (i.e., no longer containing any "x" symbols) is called a fir. If a string s has a fix that adheres to a given description d, s is called firable with respect to d. By definition, the boolean function Fir(s,d)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
Related questions
Question
Pls. repharse this notations and concept.Thank you.

Transcribed Image Text:This is precisely the Nonogram-type description a1, a2, . .., a, for a line (row
or column). Note that it has length 2r + 1 and can also be written as
0*1ª o+1®°0+ ...1ªro*.
We denote the set of all Nonogram-type descriptions by Dnonogram C D. In the
sequel we will concentrate on this type of description.
Let s be a finite string over r. If zero or more occurrences of x are replaced
with elements from E, the resulting string is called a specification of s. A
specification to a string over E (i.e., no longer containing any “x" symbols) is
called a fir. If a string s has a fix that adheres to a given description d, s is
called fixable with respect to d. By definition, the boolean function Fiæ(s, d)
is true if and only if s is fixable with respect to d. In a somewhat different
context, we also use the term fixing a pixel to indicate that a pixel has only
one possible value, and can therefore be assigned that value.
An m x n Nonogram description N consists of m > 0 row descriptions
r1, r2, ...,"m € Dnonogram and n > 0 column descriptions c, C2, . .. , Cn E Dnonogram-
A partial filling is an m x n matrix over I. The set of all partial fillings is de-
noted by Imxn; its elements can also be considered as strings of length m x n.
If a partial filling contains no occurrences of x, it is called a full fix. A full fix
F€ Emxn adheres to the Nonogram description N if the ith row of F adheres
to r; (for all i = 1,2, ..., m) and the jth column of F adheres to c; (for all
j = 1,2, ..., n). We generalize the concepts of specification and fixable that
defined for single lines in the natural way to mxn Nonograms.
|were

Transcribed Image Text:We now define notation for a single line (i.e., row or column) of a Nonogram.
After that, we combine these into rectangular puzzles.
Let E be a finite alphabet. Its elements are referred to as pixel values. In
this paper we focus on the case E = {0, 1}, but most concepts apply to sets
consisting of more than two elements as well. The symbols 0 and 1 represent
the white (0) and black (1) pixels in the puzzle. In addition, we introduce a
special symbol, x ¢ E, indicating that a pixel is not decided yet. Put I' =
EU {x}. For l > 0, let E' (resp. I*) denote the set of all strings over E (resp.
T) of length l.
For describing a Nonogram, we introduce more general concepts of row and
column descriptions, such that Nonograms are in fact a special case. Most of
the concepts in this paper can be applied to all logic problems that follow the
more general definitions.
A description d of length k > 0 is an ordered series (d, d2, ..., dr) with d; =
o;{a,, b;}, where o; e £ and a;, b, € {0, 1, 2, ...} with a; < b; (j = 1,2, ...,k).
The curly braces are used here in order to stick to the conventions from regular
expressions; so, in o;{a;, b;} they do not refer to a set, but to an ordered pair.
Any such d, will correspond with between a, and b; characters o,, as defined
below. Without loss of generality we will assume that consecutive characters
o; differ, so o; # Oj+1 for j = 1,2, ..., k – 1. Let Dr denote the (infinite) set
of all descriptions of length k, and put D = U,Dk, where Do consists of the
empty description e. A single d; = o;{a;,b;} is called a segment description.
We will sometimes write o* as a shortcut for o{0, } (for o e E) and o+
as a shortcut for o{1,00}, where ∞ is suitably large number. We use oª as
a shortcut for o{a, a} (a € {0, 1, 2, ...}), and we sometimes omit parentheses
and commas; also oº is omitted.
A finite string s over E adheres to a description d (as defined above) if s =
of o..o, where a; < c; < b; for j = 1,.,k. As an example, consider
the following description for E = {0, 1}:
d = (0{0, 0}, 1{a1, a1}, 0{1, 0}, 1{a2, a2},
0{1, 0}, ..., 1{a,, a, }, 0{0, ∞}).
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps

Recommended textbooks for you

Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON

Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science

Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning

Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON

Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science

Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning

Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning

Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education

Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY