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What is the classification of 1-dimensional commutative formal group laws over $\mathbb{Z}$ up to isomorphism?

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#abstract-algebra #algebraic-geometry #algebraic-topology #formal-groups
111
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Is $\Bbb Z[x_1,x_2,\Bbb…]/(x_ix_j- {i+j \choose i}x_{i+j})$ a noetherian ring?

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#abstract-algebra #commutative-algebra #formal-groups
175
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Is $ \frac{x+y}{x^3 y^3 - x^3 y - x y^3 + 2 xy + 1} $ a formal group law?

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#rational-functions #associativity #symmetric-functions #formal-groups
106
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Formal group law and Koenigs function conjecture !?

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#real-analysis #dynamical-systems #functional-equations #complex-dynamics #formal-groups
131
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Height of a formal group law homomorphism

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#elliptic-curves #formal-groups
128
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The formal group law of height $ \ 2$ or $ \ 3 $ over $\mathbb{F}_p$

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#formal-groups
361
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Definition of an invariant differential form on a formal group

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#differential-forms #elliptic-curves #formal-groups
127
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Why do we say always "$1$-dimensional formal group law"?

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#algebraic-geometry #formal-groups
435
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Showing the center of an endomorphism ring is a direct summand

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#abstract-algebra #algebraic-number-theory #formal-groups
103
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Are formal groups associated to various groups different?

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#algebraic-geometry #algebraic-number-theory #algebraic-groups #formal-power-series #formal-groups
111
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What is the relation between Lie algebra/ group and formal group laws

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#lie-groups #lie-algebras #formal-groups
46
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Can we consider formal power series $P(t)=\sum_{m=0}^{\infty} \binom{2m}{m} \left[m^l(4t-1)^l+F_l(t) \right]t^m$ as formal group law?

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#formal-power-series #formal-groups
65
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What role does ring $R$ play in formal group?

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#abstract-algebra #group-theory #ring-theory #formal-groups
91
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Why a particular choice of power series $f$ working for Lubin-Tate theory?

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#abstract-algebra #number-theory #algebraic-number-theory #class-field-theory #formal-groups
587
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Formal group laws VS Formal Lie groups

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#abstract-algebra #commutative-algebra #terminology #formal-power-series #formal-groups

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