Introductory Logic Terms Unit 1

Front 1

Logic

Back 1

The science and art of
reasoning well.

Front 2

Law of Excluded Middle

Back 2

Any statement is either true
or false.

Front 3

Law of Identity

Back 3

If a statement is true then it
is true.

Front 4

Law of Non-Contradiction

Back 4

A statement cannot be both
true and false.

Front 5

Formal Logic

Back 5

Deals with proper modes
of reasoning .

Front 6

Informal Logic

Back 6

Deals with operations of
thinking that are indirectly
related to reasoning.

Front 7

Induction

Back 7

Is reasoning with probablility
from examples or experience
to general rules.

Front 8

Deduction

Back 8

Is reasoning with certainty
from premises to
conclusions.

Front 9

Term

Back 9

Is a concept that can be
expressed precisely.

Front 10

Definition

Back 10

Is a statement that gives the
the meaning of a term.

Front 11

Ambiguous Word

Back 11

A word that has more than
one definition.

Front 12

Vague Word

Back 12

One whose extent is unclear.

Front 13

Theoretical Definitions

Back 13

Are often scientific or
Philosophical in nature.

Front 14

Persuasive Definitions

Back 14

A definition which persuades
the listner one way or
another.

Front 15

Genus of a Term

Back 15

A term that is more general,
broad, or abstract than the
original term and includes it.

Front 16

Species of a Term

Back 16

Is a term that is more specific,
narrow, or concreter than the
original term and is included
in it.

Front 17

Extension of a Term

Back 17

A term is the sum of all the
individual objects described
by it.

Front 18

Intension of a Term

Back 18

Is the sum of all the common
attributes denoted by the
term.

Front 19

STATEMENT

Back 19

A statement is a senntence
which is either true of false.

Front 20

SELF- SUPPORTING
STATEMNET

Back 20

A self-supporting statement
is a staement whose truth
value can be determind from
the statement itself.

Front 21

TAUTOLOGHY

Back 21

A statement is a staement
which is always true becuase
of it's logical structure.

Front 22

SELF-CONTRADICTION

Back 22

A self-contradiction is a
statement that is false due
to it's logical stucture.

Front 23

SUPPORTED STATEMENT

Back 23

A supported statement is a
statement whise truth value
depends on evidence or
informaton from outside itself

Front 24

Statement

Back 24

A statement is a sentence
which is either trie or false.

Front 25

Self-supporting

Back 25

A self-supporting statement
is a statement whose truth
value can be determind from
the statement itslef.

Front 26

Tautlogy

Back 26

A tautlogy is a statement
which is always true because
of its logical strutuce.

Front 27

Self-contradiction

Back 27

A self-contradition is a
statement that is false due to
its logical struture.

Front 28

Supported statement

Back 28

A supported statement is a
statement whose truth value
depends on evidence or
information from outside itself.

Front 29

Two statement

Back 29

Two statements are
consistent if they can both be
true at the same time.

Front 30

Two statements
implication

Back 30

Two statements are related
by implication if the truth of
one requires the truth of the
other.

Front 31

Two statements logically

Back 31

Two statements are logically
equivalent if they imply one
another

Front 32

Two statemenys
independent

Back 32

Two statement are indepent
if the truth of falsity of one has
no effect on the truth of falsity
of the other.