Prouhet–Thue–Morse constant: Difference between revisions

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<br><br>Abruptly your heart begins beating out of your chest and you can't catch your breath. You're feeling tingling sensations creeping up your arms and at the similar time you realize you might be light-headed. You're thinking “Something dangerous is going on,”  dash diet and you feel trapped. This is what a panic attack seems like.<br><br>Passionflower, sometimes often called the purple ardour flower, contains hypnotic and sedative properties which may assist calm and soothe frayed nerves. Based on Medicinal Herb Information, people have used passionflower to take care of restlessness, insomnia and hysteria. This may occasionally also reduce blood pressure stage and ease nervous headaches. Seek the advice of together with your child's pediatrician to search for the right passionflower dosage for the kid's nervousness symptoms.<br><br>By utilizing these simple tips on weight loss program and train you can be nicely in your approach to attaining a extra normal vary blood strain level and likewise assist cut back high blood pressure in the future. Nervousness is a part of a normal human experience and can always be there to some extent. Everybody has experienced it at one level or one other. It is a regular reaction to stress that helps folks to cope  detox diet with tense conditions. It is part of a flight or combat response. Problems happen when this response is simply too sensitive and chronic. The intensity of chest tightness will increase when there's a rise in the anxiety stage. Therefore, the next time you face this downside, try to cut back the underlying anxiety, and you'll easily get rid of the tight feeling in the chest.<br><br>Practical Methods to Alleviate Panic Attacks in Kids Panic assaults can be scary and so unhealthy that they get in the way in which of your every day actions. Treatment can assist most people have fewer symptoms and even cease the assaults. Early therapy of panic attacks is essential. It could prevent other issues related to panic dysfunction. These issues embrace melancholy , anxiety problems , and substance abuse Regularly Asked Questions Recurrent panic assaults may be gentle to severe. They might continue for years, especially if you happen to even have agoraphobia (avoiding locations the place you concern one other attack will happen). You'll have lengthy periods of time without panic attacks. And you'll have other durations of time when attacks happen usually. frequent, surprising panic attacks<br><br>While still not extensively accepted, herbal drugs is being taught extra in medical colleges and pharmacy colleges. Extra well being care providers are studying in regards to the positive and probably detrimental results of utilizing natural medicines to assist treat health circumstances. Some health care suppliers, including doctors and pharmacist, are skilled in natural medicine. They can help folks create therapy plans that use herbs, conventional drugs and lifestyles changes to promote health.
 
In [[mathematics]], a '''periodic sequence''' is a [[sequence]] for which the same terms are repeated over and over:
 
:''a''<sub>1</sub>, ''a''<sub>2</sub>, ..., ''a''<sub>''p''</sub>,&nbsp;&nbsp;''a''<sub>1</sub>, ''a''<sub>2</sub>, ..., ''a''<sub>''p''</sub>,&nbsp;&nbsp;''a''<sub>1</sub>, ''a''<sub>2</sub>, ..., ''a''<sub>''p''</sub>, ...
 
The number ''p'' of repeated terms is called the '''period'''.
 
==Definition==
A periodic sequence is a sequence ''a''<sub>1</sub>, ''a''<sub>2</sub>, ''a''<sub>3</sub>, ... satisfying
 
:''a''<sub>''n''+''p''</sub> = ''a''<sub>''n''</sub>
 
for all values of ''n''. If we regard a sequence as a [[function (mathematics)|function]] whose domain is the set of [[natural number]]s, then a periodic sequence is simply a special type of [[periodic function]].
 
==Examples==
The sequence of digits in the [[decimal]] expansion of 1/7 is periodic with period six:
 
: 1 / 7 = 0 . 1 4 2 8 5 7&nbsp;&nbsp;1 4 2 8 5 7&nbsp;&nbsp;1 4 2 8 5 7&nbsp;&nbsp;...
 
More generally, the sequence of digits in the decimal expansion of any [[rational number]] is eventually periodic (see below).
 
The sequence of powers of &minus;1 is periodic with period two:
 
: &minus;1, +1, &minus;1, +1, &minus;1, +1, ...
 
More generally, the sequence of powers of any [[root of unity]] is periodic.  The same holds true for the powers of any element of finite [[order (group theory)|order]] in a [[group (mathematics)|group]].
 
A [[periodic point]] for a function ƒ: ''X'' → ''X'' is a point ''p'' whose [[orbit (dynamics)|orbit]]
 
: <math>p,\, f(p),\, f(f(p)),\, f^3(p),\, f^4(p),\, \ldots</math>
 
is a periodic sequence.  Periodic points are important in the theory of [[dynamical systems]].
 
==Periodic 0, 1 sequences==
 
Any periodic sequence can be constructed by element-wise addition, subtraction, multiplication and division of periodic sequences consisting of zeros and ones. Periodic zero and one sequences can be expressed as sums of trigonometric functions:
 
:<math>\sum_{k=1}^{k=1} \cos (-2\pi\frac{n(k-1)}{1})/1 = 1,1,1,1,1,1,1,1,1...</math>
 
:<math>\sum_{k=1}^{k=2} \cos (-2\pi\frac{n(k-1)}{2})/2 = 0,1,0,1,0,1,0,1,0...</math>
 
:<math>\sum_{k=1}^{k=3} \cos (-2\pi\frac{n(k-1)}{3})/3 = 0,0,1,0,0,1,0,0,1,0,0,1,0,0,1...</math>
 
:<math>...</math>
 
:<math>\sum_{k=1}^{k=N} \cos (-2\pi\frac{n(k-1)}{N})/N = 0,0,0...,1 \text{  sequence with period  } N </math>
 
 
 
==Generalizations==
A sequence is '''eventually periodic''' if it can be made periodic by dropping some finite number of terms from the beginning.  For example, the sequence of digits in the decimal expansion of 1/56 is eventually periodic:
 
: 1 / 56 = 0 . 0 1 7&nbsp;&nbsp;8 5 7 1 4 2&nbsp;&nbsp;8 5 7 1 4 2&nbsp;&nbsp;8 5 7 1 4 2&nbsp;&nbsp;...
 
A sequence is '''asymptotically periodic''' if its terms approach those of a periodic sequence. That is, the sequence ''x''<sub>1</sub>,&nbsp;''x''<sub>2</sub>,&nbsp;''x''<sub>3</sub>,&nbsp;... is asymptotically periodic if there exists a periodic sequence ''a''<sub>1</sub>,&nbsp;''a''<sub>2</sub>,&nbsp;''a''<sub>3</sub>,&nbsp;... for which
 
:<math>\lim_{n\rightarrow\infty} x_n - a_n = 0.</math>
 
For example, the sequence
 
:1 / 3,&nbsp;&nbsp;2 / 3,&nbsp;&nbsp;1 / 4,&nbsp;&nbsp;3 / 4,&nbsp;&nbsp;1 / 5,&nbsp;&nbsp;4 / 5,&nbsp;&nbsp;...
 
is asymptotically periodic, since its terms approach those of the periodic sequence 0, 1, 0, 1, 0, 1, ....
 
{{DEFAULTSORT:Periodic Sequence}}
[[Category:Sequences and series]]

Latest revision as of 09:06, 16 August 2014



Abruptly your heart begins beating out of your chest and you can't catch your breath. You're feeling tingling sensations creeping up your arms and at the similar time you realize you might be light-headed. You're thinking “Something dangerous is going on,” dash diet and you feel trapped. This is what a panic attack seems like.

Passionflower, sometimes often called the purple ardour flower, contains hypnotic and sedative properties which may assist calm and soothe frayed nerves. Based on Medicinal Herb Information, people have used passionflower to take care of restlessness, insomnia and hysteria. This may occasionally also reduce blood pressure stage and ease nervous headaches. Seek the advice of together with your child's pediatrician to search for the right passionflower dosage for the kid's nervousness symptoms.

By utilizing these simple tips on weight loss program and train you can be nicely in your approach to attaining a extra normal vary blood strain level and likewise assist cut back high blood pressure in the future. Nervousness is a part of a normal human experience and can always be there to some extent. Everybody has experienced it at one level or one other. It is a regular reaction to stress that helps folks to cope detox diet with tense conditions. It is part of a flight or combat response. Problems happen when this response is simply too sensitive and chronic. The intensity of chest tightness will increase when there's a rise in the anxiety stage. Therefore, the next time you face this downside, try to cut back the underlying anxiety, and you'll easily get rid of the tight feeling in the chest.

Practical Methods to Alleviate Panic Attacks in Kids Panic assaults can be scary and so unhealthy that they get in the way in which of your every day actions. Treatment can assist most people have fewer symptoms and even cease the assaults. Early therapy of panic attacks is essential. It could prevent other issues related to panic dysfunction. These issues embrace melancholy , anxiety problems , and substance abuse Regularly Asked Questions Recurrent panic assaults may be gentle to severe. They might continue for years, especially if you happen to even have agoraphobia (avoiding locations the place you concern one other attack will happen). You'll have lengthy periods of time without panic attacks. And you'll have other durations of time when attacks happen usually. frequent, surprising panic attacks

While still not extensively accepted, herbal drugs is being taught extra in medical colleges and pharmacy colleges. Extra well being care providers are studying in regards to the positive and probably detrimental results of utilizing natural medicines to assist treat health circumstances. Some health care suppliers, including doctors and pharmacist, are skilled in natural medicine. They can help folks create therapy plans that use herbs, conventional drugs and lifestyles changes to promote health.