| 1984 European Athletics Indoor Championships | ||
|---|---|---|
 | ||
| Track events | ||
| 60 m | men | women |
| 200 m | men | women |
| 400 m | men | women |
| 800 m | men | women |
| 1500 m | men | women |
| 3000 m | men | women |
| 60 m hurdles | men | women |
| Field events | ||
| High jump | men | women |
| Pole vault | men | |
| Long jump | men | women |
| Triple jump | men | |
| Shot put | men | women |
The men's 60 metres hurdles event at the 1984 European Athletics Indoor Championships was held on 4 March. [1]
| Gold | Silver | Bronze |
Romuald Giegiel  Poland | György Bakos  Hungary | Jiří Hudec  Czechoslovakia |
First 3 from each heat (Q) and the next 2 fastest (q) qualified for the final.
| Rank | Heat | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 2 | Romuald Giegiel | Poland | 7.72 | Q |
| 2 | 1 | György Bakos | Hungary | 7.79 | Q |
| 3 | 1 | Daniele Fontecchio |  Italy | 7.82 | Q |
| 3 | 1 | Wojciech Zawiła | Poland | 7.82 | Q |
| 3 | 2 | Javier Moracho |  Spain | 7.82 | Q |
| 3 | 2 | Jiří Hudec | Czechoslovakia | 7.82 | Q |
| 7 | 1 | Reijo Byman |  Finland | 7.94 | q |
| 8 | 2 | Jürgen Schoch |  West Germany | 7.95 | q |
| 9 | 2 | Georg Präst | Italy | 7.95 | |
| 10 | 1 | Herbert Kreiner |  Austria | 8.21 | |
| 11 | 2 | Petter Hesselberg |  Norway | 8.23 | |
| 12 | 2 | Peter Bergh |  Sweden | 8.39 | |
| 13 | 1 | Gísli Sigurðsson |  Iceland | 8.51 | |
| 14 | 1 | Carlos Sala | Spain | 9.48 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
 | Romuald Giegiel | Poland | 7.62 | NR |
 | György Bakos | Hungary | 7.75 | |
 | Jiří Hudec | Czechoslovakia | 7.77 | |
| 4 | Javier Moracho | Spain | 7.78 | |
| 5 | Daniele Fontecchio | Italy | 7.81 | |
| 6 | Wojciech Zawiła | Poland | 7.88 | |
| 7 | Jürgen Schoch | West Germany | 8.02 | |
| 8 | Reijo Byman | Finland | 8.03 |
In logic and related fields such as mathematics and philosophy, "if and only if" is paraphrased by the biconditional, a logical connective between statements. The biconditional is true in two cases, where either both statements are true or both are false. The connective is biconditional, and can be likened to the standard material conditional combined with its reverse ("if"); hence the name. The result is that the truth of either one of the connected statements requires the truth of the other, though it is controversial whether the connective thus defined is properly rendered by the English "if and only if"—with its pre-existing meaning. For example, P if and only if Q means that P is true whenever Q is true, and the only case in which P is true is if Q is also true, whereas in the case of P if Q, there could be other scenarios where P is true and Q is false.
The propositional calculus is a branch of logic. It is also called propositional logic, statement logic, sentential calculus, sentential logic, or sometimes zeroth-order logic. It deals with propositions and relations between propositions, including the construction of arguments based on them. Compound propositions are formed by connecting propositions by logical connectives representing the truth functions of conjunction, disjunction, implication, equivalence, and negation. Some sources include other connectives, as in the table below.
Q, or q, is the seventeenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is pronounced, most commonly spelled cue, but also kew, kue and que.
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In mathematics, the quaternion number system extends the complex numbers. Quaternions were first described by the Irish mathematician William Rowan Hamilton in 1843 and applied to mechanics in three-dimensional space. The algebra of quaternions is often denoted by H, or in blackboard bold by Although multiplication of quaternions is noncommutative, it gives a definition of the quotient of two vectors in a three-dimensional space. Quaternions are generally represented in the form
2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and only even prime number. Because it forms the basis of a duality, it has religious and spiritual significance in many cultures.
Exclusive or, exclusive disjunction, exclusive alternation, logical non-equivalence, or logical inequality is a logical operator whose negation is the logical biconditional. With two inputs, XOR is true if and only if the inputs differ. With multiple inputs, XOR is true if and only if the number of true inputs is odd.
In physics, Hamiltonian mechanics is a reformulation of Lagrangian mechanics that emerged in 1833. Introduced by Sir William Rowan Hamilton, Hamiltonian mechanics replaces (generalized) velocities used in Lagrangian mechanics with (generalized) momenta. Both theories provide interpretations of classical mechanics and describe the same physical phenomena.
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Coulomb's inverse-square law, or simply Coulomb's law, is an experimental law of physics that calculates the amount of force between two electrically charged particles at rest. This electric force is conventionally called the electrostatic force or Coulomb force. Although the law was known earlier, it was first published in 1785 by French physicist Charles-Augustin de Coulomb. Coulomb's law was essential to the development of the theory of electromagnetism and maybe even its starting point, as it allowed meaningful discussions of the amount of electric charge in a particle.
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