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visits member for 3 years, 3 months
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a teacher at university in china who is not a mathematician.:)


1m
comment Any other operators that may convert agebraic function into transcendental ones
$\mathfrak{T} f(x) \notin$
2h
comment Any other operators that may convert agebraic function into transcendental ones
@S.Carnahan,Maybe I should add the following condition:other operators that may convert algebraic function into transcendental function that are not in the set of transcendental function converted by integral from algebraic functions ,moreover,those transcendental function converted by operators but integral are computable.
2h
comment Any other operators that may convert agebraic function into transcendental ones
@S.Carnahan,Thank you,I have post the question on math.stackexchange now,hope I can get some helpful answers.
2h
revised Any other operators that may convert agebraic function into transcendental ones
added 4 characters in body
2h
comment Any other operators that may convert agebraic function into transcendental ones
@S.Carnahan,I can not understand why you think the question is trivial,is the integral the only operator of this kind?
3h
comment Any other operators that may convert agebraic function into transcendental ones
Why to want to close the post?
3h
asked Any other operators that may convert agebraic function into transcendental ones
8h
accepted Given a formal power series ,decide whether there exists a polynomial the series satisfies and if it exists,how to write it down?
Jul
19
comment Is there a natural random process that is rigorously known to produce Zipf's law?
Is there any linkage between this question and research on Riemann Hypothesis?
Jul
9
awarded  Peer Pressure
Jul
9
awarded  Custodian
Jun
28
comment Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
@EmilJeřábek,I get it,thank you.
Jun
28
comment Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
@EmilJeřábek,what do you mean by "one might reasonably demand the opposite"?
Jun
28
comment Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
@EmilJeřábek,maybe we have to contruct other computational model to solve the LBA problem –
Jun
27
comment Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
Noah S,I had already selected other post as answer before your editing.Anyway,thank you ,Emil and Max,the question is clarified.
Jun
27
revised Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
added 12 characters in body
Jun
27
comment Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
@EmilJeřábek,thank you very much,since the post about inherent ambiguity of CSL had been close(that time I found the thesis,but read it with suspicion),I tried to found the proof and definition.Now it is certain,and settled.
Jun
27
accepted Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
Jun
27
comment Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
Yes,"Moreover, the existence of any inherently ambiguous CSL language would imply a separation of USPACE(O(n)) and DSPACE(O(n)) from NSPACE(O(n)), and by padding, also a separation of (U)L from NL",This is why I try to give a definition and find a proof of existence of inherently ambiguous CSL.And I had thought that it has been found before reading your answer.By some clue,it seems that DSPACE(O(n)) is not equivalent to NSPACE(O(n))
Jun
27
comment Inherent ambiguity of the context-sensitive language $L = {a^ib^ic^id^je^jf^j \bigcap a^ib^jc^id^je^if^j} $ or $a^nb^nc^nd^ne^nf^n$
Hope someone will give a proof.