Direct sum of Hilbert spaces

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DIRECT & Jupiter Rocket Family, Direct, Direct marketing, Direct sum, Sun Direct, Nintendo Direct, Direct action, Direct democracy, Direct-to-video, Direct inward dial, Direct election, Wi-Fi Direct, Direct selling, Direct Line Group, Supporters Direct, Direct image functor, Direct tax, Direct product, Direct limit, Direct Connect (protocol), Direct debit, Biology Direct, Direct injection, Direct fire, Direct current, Direct-drive mechanism, Direct dialing, Direct-to-disc, Direct fluorescent antibody, Direct Payments, Direct sum of modules, Direct method, NHS Direct, Kemper Direct, Direct grant grammar school, Live & Direct, Foreign direct investment, Direct commission officer, Direct access, Direct holding system, Direct air capture, Direct–inverse alignment, MSN Direct, Direct coupled, Direct market, Direct bank, Direct connect, Direct impingement, Direct participation program, Direct Fly Alto, Direct effect of European Union law, Gasoline direct injection, Direct rule (Northern Ireland), Direct Selling Association, Direct deposit, Direct Relief, Direct product of groups, DirectX, Direct distance dialing, Direct provision, Direct-to-consumer advertising, Direct pathway, Direct-drive sim racing wheel, Direct, indirect, and induced employment, Direct (EP), Source Direct, Direct Contact, Direct Air, Retro-direct, Europe Direct, Party of Direct Democracy, Direct insolation, Direct TPMS, History of direct democracy in the United States, ScienceDirect, Seymour Direct, Direct revelation, Direct Hit, Direct public offering, Direct digital synthesis, Direct sum of groups, Direct ascent, Direct cinema, First Direct, Direct trade, Direct Hits (The Killers album), Direct-attached storage, Direct reduced iron, Direct and indirect band gaps, Online Direct Democracy, Transport Direct, Connect:Direct, DC Direct, Internet Direct, Direct instruction, Direct Fly, Mars Direct, Direct-sequence spread spectrum, Direct Hits, Direct photon, Direct finance, Direct Rendering Infrastructure, Direct to consumer, Travel City Direct, Direct action (military), DirectDraw, Sports Direct, TreasuryDirect, Borrow Direct, Direct and Counter-Cyclical Program, Direct conversion, Direct seeded rice, Direct material total variance, Direct-conversion receiver, Direct Democracy Party of New Zealand, Southern Africa Direct, Total Direct Énergie, Direct voice, Portsmouth Direct line, Direct methanol fuel cell, Direct Marketing Ass'n v. Brohl, En direct de l'Olympia, Direct Fly sro, Direct-to-disc recording, Direct-to-fan, Direct rule, Direct costs, Direct-field acoustic testing, Foreign direct investment in Romania, International direct dialing, Direct-administered municipality, Direct factor Xa inhibitors, FreshDirect, Direct-to-consumer, Direct entry officer, List of direct democracy parties, Home Country Direct, Direct-drive turntable, Cork and Macroom Direct Railway, Direct method in the calculus of variations, Direct torque control, Direct negative evidence, Direct action (disambiguation), Direct digital control, Direct cable connection, Direct address, Direct Revenue, Direct manipulation animation, Direct-access storage device, Direct exchange geothermal heat pump, Direct Action: Memoirs of an Urban Guerrilla