Biconditional elimination is the name of two valid rules of inference of propositional logic.

Biconditional introduction is the converse of biconditional elimination.

To the southeast, the basin joins the Mekong Delta, which, extending into Vietnam, provides both water and land communications between the two countries.

European route E55 joins the two cities ; ferries connect the two sides.

This arrangement gives excellent efficiency, but can suffer from the drawback that there is a small mismatch in the cross-over region at the " joins " between the two halves of the signal, as one output device has to take over supplying power exactly as the other finishes.

The third " look " joins the first two looks together: it is the male audience member's perspective of the male character in the film.

* Material conditional also joins two simpler propositions, and we write, which is read " if then ".

In this article, class A is at the top, both B and C separately beneath it, and D joins the two together at the bottom to form a diamond shape.

The signs come true ( though the text skips the first two, suggesting that a portion of the text has been lost, or edited out for some reason ), and Saul joins the ecstatic prophets, hence the phrase.

: Trans-splicing is a form of splicing that joins two exons that are not within the same RNA transcript.

In Hercules, during her two first episodes, Xena was an outlaw and a powerful warlord, but in her third appearance she joins Hercules to defeat the warlord Darphus, who had taken her army.

The structure of the bowline is identical to that of the sheet bend, except the bowline forms a loop in one rope and the sheet bend joins two ropes.

The latter joins one optical fiber to two or more other optical fibers.

The stationary female joint is designed such that it joins two or more pieces of glass tubing.

", or when a minister joins two people in marriage saying, " I now pronounce you husband and wife.

It is virtually divided into two by the Ponte Punta Penna Pizzone, which joins the Punta Penna to the Punta Pizzone.

It tells the story of an idle rich boy who joins the US Army's Rainbow Division and is sent to France to fight in World War I, becomes friends with two working class men, experiences the horrors of trench warfare, and finds love with a French girl.

It was, until November 24, 2010, the only county in Kentucky to have two legally recognized county seats ; Campbell County now joins Kenton County in that distinction.

County Route 507 joins Route 7 at this intersection and the two routes continue west, meeting the southern terminus of Route 17 ( Ridge Road ) and the northern terminus of County Route 697 ( Kearny Avenue ).

Goose Creek flows along Boswell's south side and joins Mud Pine Creek about two miles to the southeast.

It is quite likely that the location of Laurelville near where Laurel joins Saltcreek was influenced by the potential water power that these two streams provided.

This slag content made the iron very tough, gave it considerable resistance to rusting, and allowed it to be more easily " forge welded ," a process in which the blacksmith permanently joins two pieces of iron, or a piece of iron and a piece of steel, by heating them nearly to a white heat and hammering them together.

North of Bishopbridge, where the River Rase joins the Ancholme, the river runs in two intertwining channels.

There is a choice of route to reach the Grand Union, as there are two locks side by side, one on the main line of the canal, and one on the branch, but a channel joins the bottom ends of both locks.

The Saline River, one of the Smoky Hill's two main tributaries, joins the river in eastern Saline County.

Having dimensions of only a few attributes, while simpler to maintain, results in queries with many table joins and makes the star schema less easy to use.

Star joins are simpler than possible in snowflake schema.

Pammy joins her friends Ethan and Jack on a trip to Maine, where they come to the realization that their collective nostalgia for simpler times and rural life is largely invented.

Divided we fall ,' he joins with the lion to fight hunters.

For example, if we take the opposite of a lattice, we will find that meets and joins have their roles interchanged.

Instead of “ determine ,” we may also employ other forms of expression ; for example, we may say “ A lies upon a ”, “ A is a point of a ”, “ a goes through A and through B ”, “ a joins A to B ”, etc.

The angel Abariel, after commanding Zauriel to surrender his sword, gives Zauriel this heavenly weapon " until such time we may need it back ", formerly wielded by the Archangel Michael himself, when he joins the Shadowpact ; it is said to be even more capable than the Trident of Lucifer wielded by the Blue Devil, and " has great and terrible powers far beyond your sword's meager abilities ".

Maheshwara or Shiva is the god of destruction and ' death ' says that just like how a new star can only be born upon the destruction of an old star which has been burning bright, just so do we find that only in complete destruction is there creation and that the ultimate truth, immortality and permanence is in the soul which joins the BRAHMAN and that physical matter is only recycled over and over again.

Ernie joins the company as it goes down the road, narrating its conclusion: " For those beneath the wooden crosses, there is nothing we can do, except perhaps to pause and murmur, ' Thanks pal, thanks.

At the party, Mai joins him to dance, asking him " Shall we dance?

This is almost always because the branch joins the main line coming from the same direction as the main line, and we want the chaining numbers of the branch to be derived from the main line, so as not to have to establish a separate chaining zero location for the branch.

After the gang throw the mouse around to make him " fly ", Kenny ties the mouse's tail to a balloon and we see it float to the moon where it joins a whole colony of other mice frolicking on the moon.

When MacLeod hears the sound of the shot and joins him, Dawson tells him, " We make mistakes ... we clean them up.

After being given time to pray, write letters, and save their possessions to be sent to their families, Archy joins the last wave ; going over the top and into no man's land.

The primary benefit of a star schema is its simplicity for users to write, and databases to process: queries are written with simple inner joins between the facts and a small number of dimensions.

* WorldNetDaily. com, August 25, 2005, " Alan Sears joins WND columnist lineup: Defender of liberty, former federal prosecutor to write weekly column "

At first, she is a subordinate of the fishman Arlong, but she is eventually freed of this service and permanently joins Monkey D. Luffy for her dream to write the complete map of the Grand Line.