P Series (other)
P series or P-series may refer to: * the ''p''-series in mathematics, related to convergence of certain series * P-series fuels, blends of fuels * Huawei P series, mobile phone series by Huawei * IBM pSeries, computer series by IBM * Ruger P series – pistols * ThinkPad P series, mobile workstation line by Lenovo * Sony Cybershot P-series digital cameras, see Cyber-shot * Sony Vaio P series – notebook computers * Sony Ericsson P series, a series of cell phones * Vespa P-series motor scooters See also * O series (other) * Q series (other) * T series (other) T series or T-Series may refer to: Technology * Apple T series, a family of processors * Canon T series, a line of single lens reflex cameras * Juniper T series, a core router * Sony Ericsson T series, a series of cell phones * SPARC T series, a ...

Convergence Tests
In mathematics, convergence tests are methods of testing for the convergence, conditional convergence, absolute convergence, interval of convergence or divergence of an infinite series \sum_^\infty a_n. List of tests Limit of the summand If the limit of the summand is undefined or nonzero, that is \lim_a_n \ne 0, then the series must diverge. In this sense, the partial sums are Cauchy only if this limit exists and is equal to zero. The test is inconclusive if the limit of the summand is zero. This is also known as the nth-term test, test for divergence, or the divergence test. Ratio test This is also known as d'Alembert's criterion. : Suppose that there exists r such that :: \lim_\left, \frac\ = r. : If ''r'' 1, then the series diverges. If ''r'' = 1, the ratio test is inconclusive, and the series may converge or diverge. Root test This is also known as the ''n''th root test or Cauchy's criterion. : Let :: r=\limsup_\sqrt : where \limsup denotes the limit superior (possib ...
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Harmonic Series (mathematics)
In mathematics, the harmonic series is the infinite series formed by summing all positive unit fractions: \sum_^\infty\frac = 1 + \frac + \frac + \frac + \frac + \cdots. The first n terms of the series sum to approximately \ln n + \gamma, where \ln is the natural logarithm and \gamma\approx0.577 is the Euler–Mascheroni constant. Because the logarithm has arbitrarily large values, the harmonic series does not have a finite limit: it is a divergent series. Its divergence was proven in the 14th century by Nicole Oresme using a precursor to the Cauchy condensation test for the convergence of infinite series. It can also be proven to diverge by comparing the sum to an integral, according to the integral test for convergence. Applications of the harmonic series and its partial sums include Euler's proof that there are infinitely many prime numbers, the analysis of the coupon collector's problem on how many random trials are needed to provide a complete range of responses, the co ...
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Huawei P Series
The Huawei P series (formerly the Ascend P series) is a line of high-end and medium-range Android smartphones produced by Huawei. The P series was formerly marketed as part of Huawei's larger Ascend brand. Some models are called ''P smart''. Under the company's current hardware release cadence, P series phones are typically directed towards mainstream consumers as the company's flagship smartphones, refining and expanding upon technologies introduced in Mate series devices (which are typically positioned towards early adopters). The P series has featured a strong emphasis on camera functionality; since 2016, and beginning with the Huawei P9, Huawei has been in a co-engineering partnership with the German manufacturer Leica. Phones Ascend P1 The Huawei P1 was released on July 19, 2012, in Canada, named as the Ascend P20 lite. Ascend P2 Ascend P6 Ascend P7 The Huawei Ascend P7 was announced on May 7, 2014, and released on June 7, 2014. It was the last phone to carr ...
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IBM PSeries
The IBM System p is a high-end line of RISC (Power)/UNIX-based servers. It was the successor of the RS/6000 line, and predecessor of the IBM Power Systems server series. History The previous RS/6000 line was originally a line of workstations and servers. The first System p server line was named the ''e''Server pSeries in 2000 as part of the e-Server branding initiative. In 2004, with the advent of the POWER5 processor, the server family was rebranded the ''e''Server p5. In 2005, following IBM's move to streamline its server and storage brands worldwide, and incorporating the "System" brand with the Systems Agenda, the family was again renamed to System p5. The System p5 now encompassed the IBM OpenPower product line. In 2007, after the introduction of the POWER6 processor models, the last rename under the System p brand dropped the p (numbered) designation. In April 2008, IBM announced a rebranding of the System p and its unification with the mid-range System i platform. The ...
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Ruger P Series
The Ruger P series is a line of centerfire semi-automatic pistols made by Sturm, Ruger & Company produced from 1985 to 2013. The P-series pistols were designed for military, police, civilian and recreational use. The designs are largely based on the Browning action found in the M1911 pistol, but with minor variations, generally related to the safety mechanism and the barrel-camblock interface. Reviews have considered them rugged, reliable, and strong, though this strength comes at the price of bulk and a blocky appearance.Glenn Barnes "Ruger's P series: what's wrong with Ruger's P-series semiauto pistols? Not a darn thing, says the author". Guns Magazine. FindArticles.co Retrieved 2009-11-03. Design details The P-series pistols are Recoil operation#Short recoil operation, short recoil–operated, locked breech semi-automatic pistols. They use a SIG P220 type locking system, and an M1911-style tilting barrel. The P series were made with a traditional double-action/single-actio ...
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ThinkPad P Series
The ThinkPad P series line of laptops is produced by Lenovo and was introduced by the company as a successor to the previous ThinkPad W series. With 15.6" and 17.3" screens, the ThinkPad P series saw the reintroduction of physically large laptops into the ThinkPad line. Marketed largely as portable workstations, many P series laptops can be configured with high-end quad-core, hexa-core or octo-core Intel processors as well as ECC memory (only with Xeon Processors) and a discrete Nvidia Quadro GPU. The P series offers ISV certifications from software vendors such as Adobe and Autodesk for various CAD software. The P52 and P72 models are the last current Lenovo laptops with a dedicated magnesium structural frame. All 15" and 17" models have a standard 6-row ThinkPad Precision Keyboard (with Numeric Keypad and optional backlight), TrackPoint and touchpad, and optional fingerprint reader. The HQ processor-based models (such as a P50/P70 and above) use only 170 W AC power adapters ...
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Cyber-shot
Cyber-shot is Sony's line of point-and-shoot digital cameras introduced in 1996. Cyber-shot model names use a DSC prefix, which is an initialism for "Digital Still Camera". Many Cyber-shot models feature Carl Zeiss trademarked lenses, while others use Sony, or Sony G lenses. All Cyber-shot cameras accept Sony's proprietary Memory Stick or Memory Stick PRO Duo flash memory. Select models have also supported CompactFlash. Current Cyber-shot cameras support Memory Stick PRO Duo, SD, SDHC, and SDXC. From 2006 to 2009, Sony Ericsson used the Cyber-shot brand in a line of mobile phones. Models The current lineup consists of: * R and RX series – state-of-the-art, large-sensor compact cameras ** DSC-RX100/DSC-RX100 II/III/IV/V/VI/VII – pocketable camera with the largest 1" sensor of all cameras of its size ** DSC-RX10/DSC-RX10 II — zoom lens 1" 24-200mm equivalent 35mm bridge camera with constant widest aperture F2.8 ** DSC-RX10 III/DSC-RX10 IV — zoom lens 1" 24-600mm eq ...
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Sony Vaio P Series
The Sony Vaio P series is a range of ultraportable subnotebook computershttp://www.sonystyle.com/webapp/wcs/stores/servlet/CategoryDisplay?catalogId=10551&storeId=10151&langId=-1&categoryId=8198552921644608896 launched in January 2009. It was marketed as a "lifestyle PC", although they share many characteristics with netbook computers. Description The Sony Vaio P series features an 8" LED-backlit display with native resolution of 1600x768, coupled with Intel GMA 500 integrated graphics, an Intel Atom Silverthorne Z5x0 CPU with System Controller Hub, Intel Poulsbo US15W chipset, and up to 2GB of DDR2 memory. Notably, the P series sports non-upgradeable RAM that is soldered to the motherboard, with some models including just 1GB of RAM. It uses a pointing stick in the keyboard as its pointing device. Exact specs vary by region. An integrated "Motion Eye" webcam (optional in some models) is located on the upper right corner of the display bezel. Built-in GPS (some models), Bluetoo ...
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Sony Ericsson P Series
The following is a list of products manufactured under the Sony Ericsson brand. Most of the models have been released under multiple names, depending on region of release, currently usually indicated by a letter added to the end of the model number ('i' for international, 'a' for North America, and 'c' for mainland China), but indicated on some (mostly older) models by a slightly differing model number. Typically, there is one version for the European and US market, and another for the Asian market. However, some models have yet more versions. Most "Walkman" branded models are also released as a non-Walkman version; such as Sony Ericsson W580 and the S500. These versions usually differ only slightly. International phones Phones in boldface indicates that the phone is a smartphone. S = Status, where P indicates ''under production'', D is ''discontinued'' and U indicates ''upcoming'' . C series: Cyber-shot C902 The Sony Ericsson C902 was released during the second quarte ...
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Vespa
Vespa () is an Italian luxury brand of scooter (motorcycle), scooters and mopeds manufactured by Piaggio. The name means wasp in Italian. The Vespa has evolved from a single model motor scooter manufactured in 1946 by Piaggio & Co. S.p.A. of Pontedera, Italy to a full line of scooters and one of seven companies today owned by Piaggio. From their inception, Vespa scooters have been known for their painted, pressed steel unibody which combines, in a unified structural unit, a complete cowling for the engine (enclosing the engine mechanism and concealing dirt or grease), a flat floorboard (providing foot protection), and a prominent front fairing (providing wind protection). History After World War II, in light of its agreement to cease war activities with the Allies, Italy had its aircraft industry severely restricted in both capability and capacity. Piaggio emerged from the conflict with its Pontedera bomber plane plant demolished by bombing. Italy's crippled economy, and t ...
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O Series (other)
O series or O-series may refer to: * BL O-series engine – a line of 4-cylinder car engines * Waco 10 – O-series biplanes * Tool steel O series, oil hardened See also * 0 series (other) * N series (other) * P series (other) P series or P-series may refer to: * the ''p''-series in mathematics, related to convergence of certain series * P-series fuels, blends of fuels * Huawei P series, mobile phone series by Huawei * IBM pSeries, computer series by IBM * Ruger P seri ...

Q Series (other)
Q series can refer to: * Bombardier Q series (Dash 8) – aircraft * IdeaCentre Q series – nettop computers * Pentax Q series – cameras * In mathematics ** q-Pochhammer symbol q-series ** Hypergeometric q-series See also * P series (other) * R series (other) ''R series'' * Adventure R series – paramotors for gliders * BL R-series engine – gasoline car engines * Dennis R series – coach chassis * Ford R series – busses * International Harvester R series – trucks * Mack R series – heavy-duty t ...