# If P, then Q.

# If isotherms are concave towards the " north-east " direction ( 45 °), then adiabats are concave towards the " east north-east " ( 31 °).

# If adiabats and isotherms are graphed severally at regular changes of entropy and temperature, respectively ( like altitude on a contour map ), then as the eye moves towards the axes ( towards the south-west ), it sees the density of isotherms stay constant, but it sees the density of adiabats grow.

# If morality is objective and absolute, God must exist.

# If the beat on the new record hits before the beat on the current record then the new record is too fast, reduce the pitch and manually slow the speed of the new record to bring the beats back in sync.

# If the beat on the new record hits after the beat on the current record then the new record is too slow, increase the pitch and manually increase the speed of the new record to bring the beats back in sync.

# It's Not Funny If I Have To Explain It — 2004 ; strips from 1997 to 2004, with more of Adams ' handwritten notes

# I Can't Remember If We're Cheap or Smart — 2012

# If equals are added to equals, then the wholes are equal.

# If equals are subtracted from equals, then the remainders are equal.

# If the remainder from dividing N by 6 is not 2 or 3 then the list is simply all even numbers followed by all odd numbers ≤ N

# If the remainder is 2, swap 1 and 3 in odd list and move 5 to the end ( i. e. 3, 1, 7, 5 )

# If the remainder is 3, move 2 to the end of even list and 1, 3 to the end of odd list ( i. e. 4, 6, 8, 2-5, 7, 9, 1, 3 )

# If the design is symmetrical in an axis parallel to the flag pole, obverse and reverse will be identical despite the mirror-reversal, such as the Indian Flag or Canadian Flag

# If not, the obverse and reverse will present two variants of the same design, one with the hoist on the left ( usually considered the obverse side, see flag illustrations ), the other with the hoist on the right ( usually considered the reverse side of the flag ).

# If two straight lines in a plane are crossed by another straight line ( called the transversal ), and the interior angles between the two lines and the transversal lying on one side of the transversal add up to less than two right angles, then on that side of the transversal, the two lines extended will intersect ( also called the parallel postulate ).

# Associativity: If a * b and b * c are defined, then ( a * b ) * c and a * ( b * c ) are defined and equal.

# Identity: If a * b is defined, then a * b * b < sup >− 1 </ sup >

# If it persists, " gather facts and seek help.

# If the noun is animate, natural gender tends to dictate grammatical gender.

# If the borrowed word happens to have a suffix that the borrowing language uses as a gender marker, the suffix tends to dictate gender.

# If the borrowed word rhymes with one or more native words, the latter tend to dictate gender.

# If a project's spending becomes too much for a committee to continue funding, it must take the issue to the Project Committee.

# Affordable premium: If the likelihood of an insured event is so high, or the cost of the event so large, that the resulting premium is large relative to the amount of protection offered, it is not likely that the insurance will be purchased, even if on offer.

# If the German Armed Forces ( Wehrmacht ) were not in a position to break the danger from the Eastern front, then Nazi Germany would fall to Bolshevism, and all of Europe would fall shortly afterward ;

# REDIRECT Asymmetric digital subscriber line

# for each line, the number of products ( i. e. the sum of the coefficients ) is equal to.

# for each line, the number of product groups is equal to.

Quarterback Carson Palmer, wide receiver # 84 T. J. Houshmandzadeh, and the rest of the Bengals line up to play the Pittsburgh Steelers in 2006.

# Counter-clockwise rotation aligns the flagella into a single rotating bundle, causing the bacterium to swim in a straight line.

# The Old Testament, in which a line of kings was created by God through the prophecy of Jacob / Israel, who created his son Judah to be king and retain the sceptre until the coming of the Messiah, alongside the line of priests created in his other son, Levi.

# The endorsement by the popes and the church of the line of emperors beginning with the Emperors Constantine and Theodosius, later the Eastern Roman emperors, and finally the Western Roman emperor, Charlemagne and his successors, the Catholic Holy Roman Emperors.

# " To draw a straight line from any point to any point.

# " To produce a finite straight line continuously in a straight line.

# The parallel postulate: " That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.

Edit line line #

# The fatwā is in line with relevant legal proofs, deduced from Qur ' anic verses and ahadith ; provided the hadith was not later abrogated by Muhammad.

# Apparent lack of regular rhythm, especially in the siguiriyas: the melodic rhythm of the sung line is different from the metric rhythm of the accompaniment.

# Electron in the initial state is represented by a solid line with an arrow pointing toward the vertex (→•).

# Electron in the final state is represented by a line with an arrow pointing away from the vertex: (•→).

# Positron in the initial state is represented by a solid line with an arrow pointing away from the vertex: (←•).

# Positron in the final state is represented by a line with an arrow pointing toward the vertex: (•←).

# Photon in the initial and the final state is represented by a wavy line (< big >~•</ big > and < big >•~</ big >).

# A bosonic propagator is represented by a wiggly line connecting two points ;

# A fermionic propagator is represented by a solid line connecting two points ;

# A bosonic field is represented by a wiggly line attached to the point ;

# A fermionic field is represented by a solid line attached to the point with an arrow toward the point ;