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  2. Piskacek's sign - Wikipedia

    en.wikipedia.org/wiki/Piskacek's_sign

    A similar physical sign had been described by Carl von Fernwald Braun. [2] It comes from an era when laboratory tests for pregnancy had not been developed, but experience gained in pelvic examination during early pregnancy by western gynecologists led them to publish their physical findings, allowing clinical diagnosis of pregnancy. [ 3 ]

  3. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    For any integer n, n ≡ 1 (mod 2) if and only if 3n + 14 (mod 6). Equivalently, ⁠ n − 1 / 3 ⁠ ≡ 1 (mod 2) if and only if n ≡ 4 (mod 6). Conjecturally, this inverse relation forms a tree except for the 124 loop (the inverse of the 421 loop of the unaltered function f defined in the Statement of the problem section of ...

  4. 1 + 2 + 3 + 4 + ⋯ - ⋯ - Wikipedia

    en.wikipedia.org/wiki/1_%2B_2_%2B_3_%2B_4_%2B_%E...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  5. Plus–minus sign - Wikipedia

    en.wikipedia.org/wiki/Plus–minus_sign

    The minus–plus sign, ... and specifying a value of +1 or −1 separately for each, or some appropriate relation, like s 3 = s 1 · (s 2) n or similar. ...

  6. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    About 1 in 475 denials will last until around the 20th week of pregnancy. The proportion of cases of denial, persisting until delivery is about 1 in 2500. [70] Conversely, some non-pregnant women have a very strong belief that they are pregnant along with some of the physical changes. This condition is known as a false pregnancy. [71]

  7. Plus and minus signs - Wikipedia

    en.wikipedia.org/wiki/Plus_and_minus_signs

    The plus sign (+) is a binary operator that indicates addition, as in 2 + 3 = 5. It can also serve as a unary operator that leaves its operand unchanged (+ x means the same as x ). This notation may be used when it is desired to emphasize the positiveness of a number, especially in contrast with the negative numbers (+5 versus −5).

  8. Complications of pregnancy - Wikipedia

    en.wikipedia.org/wiki/Complications_of_pregnancy

    [1] [2] [3] Common complications of pregnancy include anemia, gestational diabetes, infections, gestational hypertension and pre-eclampsia. [ 4 ] [ 5 ] Presence of these types of complications can have implications on monitoring lab work, imaging, and medical management during pregnancy.

  9. Intrahepatic cholestasis of pregnancy - Wikipedia

    en.wikipedia.org/wiki/Intrahepatic_cholestasis...

    Intrahepatic cholestasis of pregnancy (ICP), also known as obstetric cholestasis, cholestasis of pregnancy, jaundice of pregnancy, and prurigo gravidarum, [1] is a medical condition in which cholestasis occurs during pregnancy. [2] It typically presents with itching and can lead to complications for both mother and fetus. [2]