Wikipedia:Reference desk/Archives/Mathematics/January 2010: Difference between revisions

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Revision as of 03:27, 6 January 2010 edit Scsbot (talk \| contribs) Bots 238,275 edits edited by robot: adding January 2 ← Previous edit		Latest revision as of 08:16, 22 February 2022 edit undo MalnadachBot (talk \| contribs) 11,637,095 edits m Fixed Lint errors. (Task 12) Tag: AWB
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Line 6: {\| align=center width=95% style="background: #FFFFFF; border: 1px solid #003EBA;" cellpadding="8" cellspacing="0" \|- ! style="background: #5D7CBA; text-align: center;" ~~align="center" \| <~~font ~~face="~~-family:Arial"; color=":#FFFFFF;"> \| '''Welcome to the Wikipedia Mathematics Reference Desk Archives'''~~</font>~~ \|- \| The page you are currently viewing is a monthly archive index. While you can leave answers for any questions shown below, please ask new questions on one of the [[Wikipedia:Reference desk\|current reference desk]] pages. Line 28: # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 2#Proof_of_continuity\|Proof of continuity]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 2#What.27s_a_mathematical_coincidence.3F\|What's a mathematical coincidence?]] = January 3 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 3]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 3#Generalized_Heat_Equation\|Generalized Heat Equation]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 3#Diffusion_Equation\|Diffusion Equation]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 3#Formal_sums_for_quotients_of_primorials\|Formal sums for quotients of primorials]] = January 4 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 4]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 4#conversions\|conversions]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 4#Cantor.27s_Ordinal_Numbers\|Cantor's Ordinal Numbers]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 4#Term_by_Term_Integration_of_a_Fourier_Series\|Term by Term Integration of a Fourier Series]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 4#Sums_of_squares\|Sums of squares]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 4#Rates_of_decline\|Rates of decline]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 4#jection\|jection]] = January 5 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 5]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 5#Convergence\|Convergence]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 5#Question_on_combinations\|Question on combinations]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 5#Möbius_Maps\|Möbius Maps]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 5#NP_and_NPC\|NP and NPC]] = January 6 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 6]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 6#Predicting_number_of_items_in_a_set_.28statistics.29\|Predicting number of items in a set (statistics)]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 6#division_by_zero\|division by zero]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 6#Quotients_and_products_of_topological_spaces.\|Quotients and products of topological spaces.]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 6#Limits\|Limits]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 6#Extension_fields\|Extension fields]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 6#How_to_solve_for_B\|How to solve for B]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 6#Logarithms_and_order_of_operations\|Logarithms and order of operations]] = January 7 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 7]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 7#TI_84_plus_calculator_program\|TI 84 plus calculator program]] = January 8 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 8]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 8#Simple_Mathematics.2C_Requiring_Data\|Simple Mathematics, Requiring Data]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 8#Differentiable.3F\|Differentiable?]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 8#Number_of_partitions_of_a_set_in_classes_of_given_cardinalities.\|Number of partitions of a set in classes of given cardinalities.]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 8#Letter_grid_problem\|Letter grid problem]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 8#Limits\|Limits]] = January 9 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 9]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 9#Arrow.27s_impossibility_theorem_and_real_elections\|Arrow's impossibility theorem and real elections]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 9#1001_.28number.29\|1001 (number)]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 9#Pairwise_coprime_integers\|Pairwise coprime integers]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 9#calculating_pi\|calculating pi]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 9#Standard_deviation_of_4_numbers\|Standard deviation of 4 numbers]] = January 10 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 10]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 10#Sum\|Sum]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 10#Harmonic_series\|Harmonic series]] = January 11 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 11]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 11#Perimeter_of_a_trapezium\|Perimeter of a trapezium]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 11#Smoothness_Scale_In_Number_Theory\|Smoothness Scale In Number Theory]] = January 12 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 12]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 12#Normal_Closures_Qual._Exam\|Normal Closures Qual. Exam]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 12#solution_of_differential_equation_of_motion_of_a_quarter_car\|solution of differential equation of motion of a quarter car]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 12#Locally_invertible_function_from_R.5E2_to_R\|Locally invertible function from R^2 to R]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 12#Estimating_number_ratios\|Estimating number ratios]] = January 13 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 13]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 13#Cube_root_function_on_the_space_Mn_of_matrices\|Cube root function on the space Mn of matrices]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 13#finding_the_centre_of_a_circle\|finding the centre of a circle]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 13#Nilpotent_homomorphisms\|Nilpotent homomorphisms]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 13#35_degrees_east\|35 degrees east]] = January 14 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 14]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 14#An_elementary_homotopy_equivalence\|An elementary homotopy equivalence]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 14#Consecutive_integers_with_same_sum_of_proper_divisors\|Consecutive integers with same sum of proper divisors]] = January 15 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 15]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 15#Is_there_a_name_for_this_property_of_sets.3F\|Is there a name for this property of sets?]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 15#Is_a_set_that_contains_only_itself_hereditary.3F\|Is a set that contains only itself hereditary?]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 15#Continuity_of_power_functions\|Continuity of power functions]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 15#Infinite_ordinals\|Infinite ordinals]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 15#Properties_of_certain_symmetric_matricies.3F\|Properties of certain symmetric matricies?]] = January 17 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 17]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 17#Archimidean_Spiral_Segment\|Archimidean Spiral Segment]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 17#Identity_Matrix_Multiplication\|Identity Matrix Multiplication]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 17#Weird_summation_notation\|Weird summation notation]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 17#Certain_repeating_digits\|Certain repeating digits]] = January 18 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 18]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 18#Asians\|Asians]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 18#differential\|differential]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 18#What_does_this_symbol.2Fsuffix_mean.3F\|What does this symbol/suffix mean?]] = January 19 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 19]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 19#Policy_recommendation_for_comparing_citation_totals_or_h-index_for_any_mathematician\|Policy recommendation for comparing citation totals or h-index for any mathematician]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 19#Variation_on_equals_sign\|Variation on equals sign]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 19#P.G.F._question\|P.G.F. question]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 19#3_rotations_about_the_vertices_of_a_triangle:_identity_map\|3 rotations about the vertices of a triangle: identity map]] = January 20 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 20]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 20#Eigenvalues_and_eigenvectors\|Eigenvalues and eigenvectors]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 20#Riemann_integral\|Riemann integral]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 20#A_few_more_geometry_problems.21\|A few more geometry problems!]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 20#Geometry_question\|Geometry question]] = January 21 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 21]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 21#Riemannian_geometry\|Riemannian geometry]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 21#Fractional_chromatic_number\|Fractional chromatic number]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 21#Expected_value_problem\|Expected value problem]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 21#can_you_explain_turbo_codes_OR_LDPC.3F\|can you explain turbo codes OR LDPC?]] = January 22 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 22]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 22#Weaker_versions_of_Fermat.27s_Last_Theorem\|Weaker versions of Fermat's Last Theorem]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 22#Bounds\|Bounds]] = January 23 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 23]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 23#Finding_a_surface_on_which_integrals_of_multiple_functions_are_0\|Finding a surface on which integrals of multiple functions are 0]] = January 24 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 24]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 24#Query_on_an_online_document_-_subgroups_of_A5\|Query on an online document - subgroups of A5]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 24#College_question:_What_material_do_I_need_to_have_a_firm_grasp_on.3F\|College question: What material do I need to have a firm grasp on?]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 24#Factoring_Polynomials\|Factoring Polynomials]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 24#Complex_icosidodecahedrons\|Complex icosidodecahedrons]] = January 25 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 25]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 25#Cryptography\|Cryptography]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 25#Differential_equation\|Differential equation]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 25#Topological_Group_Question\|Topological Group Question]] = January 26 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 26]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 26#Inverse_Trigonometric_Identity_Prove\|Inverse Trigonometric Identity Prove]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 26#Cross_ratio_equal_to_1.2F2tan.5E2_of_spherical_distnce\|Cross ratio equal to 1/2tan^2 of spherical distnce]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 26#I_was_wondering...\|I was wondering...]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 26#Normed_Spaces\|Normed Spaces]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 26#A_loxodromoid.3F\|A loxodromoid?]] = January 27 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 27]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 27#Calculating_the_area_of_a_triangle_while_on_a_coordinate_system\|Calculating the area of a triangle while on a coordinate system]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 27#Effective_procedure\|Effective procedure]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 27#Three_little_geometry_puzzles\|Three little geometry puzzles]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 27#sequence_space\|sequence space]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 27#Smooth_structures_.28manifolds.29\|Smooth structures (manifolds)]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 27#Another_triangle_problem\|Another triangle problem]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 27#How_to_build_an_ellipse.3F\|How to build an ellipse?]] = January 28 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 28]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 28#Golden_Ratio\|Golden Ratio]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 28#Reversion_to_the_mean\|Reversion to the mean]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 28#NP_definition\|NP definition]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 28#j-invariant\|j-invariant]] = January 29 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29#Why_is_the_perimeter_of_a_spherical_triangle_less_than_2_pi.3F\|Why is the perimeter of a spherical triangle less than 2 pi?]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29#Unique_bid_auctions\|Unique bid auctions]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29#Cardinality\|Cardinality]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29#ratio_inequality\|ratio inequality]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29#What_algorithm.3F\|What algorithm?]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29#Proof\|Proof]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29#Derivative_question\|Derivative question]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 29#Monty_hall_paradox\|Monty hall paradox]] = January 30 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 30]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 30#percentages.2Cround_offs_and_number_based_systerms\|percentages,round offs and number based systerms]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 30#could_there_be_ANY_change_made_in_the_rules_of_logic_without_immediate_inconsistency.3F\|could there be ANY change made in the rules of logic without immediate inconsistency?]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 30#Hexadecimal\|Hexadecimal]] = January 31 = [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 31]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 31#Normal_vectors\|Normal vectors]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 31#Rhombicosidodecahedron\|Rhombicosidodecahedron]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 31#Strange_use_of_log\|Strange use of log]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 31#Function_harmonic_on_a_strip\|Function harmonic on a strip]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 31#Intersecting_cylinders\|Intersecting cylinders]] # [[Wikipedia:Reference_desk/Archives/Mathematics/2010 January 31#What_is_the_link_between_the_edges.2C_faces_and_vertices_of_a_3D_shape.3F\|What is the link between the edges, faces and vertices of a 3D shape?]]