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  2. Fidelity of quantum states - Wikipedia

    en.wikipedia.org/wiki/Fidelity_of_quantum_states

    Fidelity is symmetric in its arguments, i.e. F (ρ,σ) = F (σ,ρ). Note that this is not obvious from the original definition. F (ρ,σ) lies in [0,1], by the Cauchy–Schwarz inequality. F (ρ,σ) = 1 if and only if ρ = σ, since Ψ ρ = Ψ σ implies ρ = σ. So we can see that fidelity behaves almost like a metric.

  3. Custodial account - Wikipedia

    en.wikipedia.org/wiki/Custodial_Account

    A custodial account is a financial account (such as a bank account, a trust fund or a brokerage account) set up for the benefit of a beneficiary, and administered by a responsible person, known as a legal guardian or custodian, who has a fiduciary obligation to the beneficiary. [1]

  4. Learn more info about AOL 24x7 Live Support - AOL Help

    help.aol.com/articles/aol-24x7-live-support-faqs

    With AOL 24x7 Live Support you get access to our AOL experts anytime you need them - by phone or chat. AOL 24x7 Live Support does not require activation, once you purchased AOL 24x7 Live Support for a monthly or annual fee, you can receive help from our AOL experts. Services included in AOL 24x7 Live Support

  5. Insurance - Wikipedia

    en.wikipedia.org/wiki/Insurance

    Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury.

  6. Access AOL Mail on mobile devices

    help.aol.com/articles/aol-mail-mobile-mail

    The AOL App gives you access to all the best of AOL, including Mail's innovative features and settings. With the app version of AOL Mail, you'll be able to add accounts, send mail, organize your mailbox, and more on either Android or iOS.

  7. Pension Benefit Guaranty Corporation - Wikipedia

    en.wikipedia.org/wiki/Pension_Benefit_Guaranty...

    The Pension Benefit Guaranty Corporation (PBGC) is a United States federally chartered corporation created by the Employee Retirement Income Security Act of 1974 (ERISA) to encourage the continuation and maintenance of voluntary private defined benefit pension plans, provide timely and uninterrupted payment of pension benefits, and keep pension insurance premiums at the lowest level necessary ...

  8. Secure your AOL account

    help.aol.com/articles/secure-your-aol-account

    • Use a strong password and change it regularly - Create a strong password to minimize the risk of unauthorized account access. • Add another level of security - Turn on two-step verification and get sent a security code when someone logs in from an unfamiliar device or location.

  9. Abigail Johnson - Wikipedia

    en.wikipedia.org/wiki/Abigail_Johnson

    Fidelity was founded by her grandfather Edward C. Johnson II. Her father, Edward C. "Ned" Johnson III , remained chair emeritus of FMR until his death in March 2022. As of March 2013, the Johnson family owned a 49% stake in the privately-held company, with Johnson herself holding an estimated 24.5%.