If a user agent reads a document with no character encoding information, it can fall back to using some other information.

If the user pressed keys 1 + 2 = 3 simultaneously the letter " c " appeared.

If a user added more than one drive to a system the user had to open the case and cut a trace in the circuit board to permanently change the drive's number, or hand-wire an external switch to allow it to be changed externally.

If the disk was not otherwise prepared with a custom format, ( e. g. for data disks ), 664 blocks would be free after formatting, giving 664 × 254 = 168, 656 bytes ( or almost 165 kB ) for user data.

If the user is unable to identify what is being demonstrated in a reasonable fashion, the map may be regarded as useless.

If the user wanted to keep his progress then the cartridge used had to have the same type of non-volatile memory hardware.

If it printed something then the tape and the printout were returned to the user, otherwise they were informed at which memory location it had stopped.

If the user decides to download the file, they negotiate the file transfer.

If the status code indicated a problem, the user agent might display the reason phrase to the user to provide further information about the nature of the problem.

If both channels were created at the same time, all user statuses are retained when the two are combined ; if one is newer than the other, special statuses are removed from those in the newer channel.

* If the library doesn't have information on a given topic, or if the library user wants more information, the librarian can refer the library user to another library or to an organization that can be contacted by phone or mail.

If the user opens the protective sliding door that covers the pins, the processor can be exposed to any electric charge the user has built up.

If the user has built up a substantial charge, the discharge can jump around the door's edge or pass through the door itself ( dielectric breakdown ).

If every user makes uploads then the servers would be flooded ; thus it is acceptable and often encouraged for users to just leech.

If there was not a market for natural gas near the wellhead it was virtually valueless since it had to be piped to the end user.

If an attacker gains access to such an internal password store, all passwords — and so all user accounts — will be compromised.

If the attacker finds a match, he knows that his guess is the actual password for the associated user.

If the password is carried as electrical signals on unsecured physical wiring between the user access point and the central system controlling the password database, it is subject to snooping by wiretapping methods.

If the user supplies a password matching the one stored for the supplied username, he or she is permitted further access into the computer system.

If the source code were included, it would be useful to a user, programmer, or system administrator, who may wish to modify the program or understand how it works.

If a bottle neck communication link offering data rate R is shared by " N " active users ( with at least one data packet in queue ), every user typically achieves a throughput of approximately R / N, if fair queuing best-effort communication is assumed.

If threads are cut into a cylindrical rod, that minimum area occurs at the root of the thread.

An intrinsic definition of the Gaussian curvature at a point P is the following: imagine an ant which is tied to P with a short thread of length r. She runs around P while the thread is completely stretched and measures the length C ( r ) of one complete trip around P. If the surface were flat, she would find C ( r ) = 2πr.

If the operating system's thread scheduler is unaware of hyper-threading it will treat all four processors as being the same.

::: If then abort ( a more recent thread has overwritten the value ),

::: If then abort ( a more recent thread is already relying on the old value ),

If this happens, other threads will be left " spinning " ( repeatedly trying to acquire the lock ), while the thread holding the lock is not making progress towards releasing it.

If the forum's users have lost interest in a particular thread, it becomes a dead thread.

If the background thread is also waiting for a miss, thread switching will not occur.

If thread one issues three instructions, one functional unit remains unused.

If the prey is too agile, the spider will try shooting web at it from a distance before pulling the thread toward itself.

If the reference counter turns 0, then by definition only 1 thread is holding a reference so the resource can safely be de-allocated from memory, again without the use of performance-expensive locking mechanisms.

If the theme of Hazlitt's Economics in One Lesson is the indirect effects of intervention in the economy, Callahan's dominant thread is the role of monetary calculation in making possible cooperative activity on a vast scale.

If one thread attempts to acquire a lock that is already held by another thread, the thread will block until the lock is free.

If the blocked thread is performing a high-priority or real-time task, it is highly undesirable to halt its progress.

" He later told The Guardian: " If there's a thread running through my career it's World in Action-the phrase as well as the programme.

If one was a worker in the London textiles industry, for example, the cost of hiring sewing equipment and purchasing thread often precluded the worker from eating on a regular basis.

* Atomicity: If the particular vectored I / O implementation supports atomicity, a process can write into or read from a set of buffers to or from a file without risk that another thread or process might perform I / O on the same file between the first process ' reads or writes, thereby corrupting the file or compromising the integrity of the input

If the number of tasks is very large, then creating a thread for each one may be impractical.

If the drop trails a thread, the dropping temperature is the temperature at which the thread breaks.

If single crystals of sufficient size cannot be obtained, various other X-ray methods can be applied to obtain less detailed information ; such methods include fiber diffraction, powder diffraction and small-angle X-ray scattering ( SAXS ).

If the end face of the fiber is perpendicular to the fiber axis, the launch angle is equal to the angle of incidence.

If multimode fiber bandwidth is measured using a laser diode directly coupled to its input, the resulting measurement can vary by as much as an order of magnitude.

If the polarization of the input light is not aligned with the stress direction in the fiber, the output will vary between linear and circular polarization ( and generally will be elliptically polarized ).

If the fiber density is known you also have a fiber diameter, otherwise it is simpler to measure diameters in micrometers.

If the symptoms are increased, it is unclear if these patients were diarrhea predominant ( which can be exacerbated by insoluble fiber ), or if the increase is temporary before benefit occurs.

( If they are not orientable the natural fibration by circles is not necessarily a Seifert fibration: the problem is that some fibers may " reverse orientation "; in other words their neighborhoods look like fibered solid Klein bottles rather than solid tori .< ref > Ronald Fintushel, Local S < sup > 1 </ sup > actions on 3-manifolds, Pacific J. o. M. 66 No1 ( 1976 ) 111-118, http :// projecteuclid. org /...) The classification of such ( oriented ) manifolds is given in the article on Seifert fiber spaces.

If X is connected, there is a discrete space F such that for every x in X the fiber over x is homeomorphic to F and, moreover, for every x in X there is a neighborhood U of x such that its full pre-image p < sup >− 1 </ sup >( U ) is homeomorphic to U x F. In particular, the cardinality of the fiber over x is equal to the cardinality of F and it is called the degree of the cover p: C → X.

If x and y are two points in X connected by a path, then that path furnishes a bijection between the fiber over x and the fiber over y via the lifting property.

If this action is transitive on some fiber, then it is transitive on all fibers, and we call the cover regular ( or normal or Galois ).

If x is in X and c belongs to the fiber over x ( i. e. ), and is a path with, then this path lifts to a unique path in C with starting point c. The end point of this lifted path need not be c, but it must lie in the fiber over x.

If p is a universal cover, then Aut ( p ) can be naturally identified with the opposite group of so that the left action of the opposite group of coincides with the action of Aut ( p ) on the fiber over x.

the set of homotopy classes of those closed curves γ based at x whose lifts γ < sub > C </ sub > in C, starting at c, are closed curves at c. If X and C are path-connected, the degree of the cover p ( that is, the cardinality of any fiber of p ) is equal to the index ( π < sub > 1 </ sub >( C, c )) of the subgroup p < sub >#</ sub > ( π < sub > 1 </ sub >( C, c )) in π < sub > 1 </ sub >( X, x ).

If one end of the optical fiber is moulded into a lens-like facet, the nearly gaussian beam carried by a single mode standard fiber will be focussed at some distance from the fiber tip.

If is a fibration with fiber F, with the base B path-connected, and the fibration is orientable over a field K, then the Euler characteristic with coefficients in the field K satisfies the product property:

A local section of a fiber bundle is a continuous map s: U → E where U is an open set in B and π ( s ( x )) = x for all x in U. If ( U, φ ) is a local trivialization of E, where φ is a homeomorphism from π < sup >− 1 </ sup >( U ) to U × F ( where F is the fiber ), then local sections always exist over U in bijective correspondence with continuous maps from U to F. The ( local ) sections form a sheaf over B called the sheaf of sections of E.