b2 | Bertini 2.0 : The redevelopment of Bertini in C++ | Math library

 by   bertiniteam C++ Version: 2.0alpha6 License: No License

kandi X-RAY | b2 Summary

kandi X-RAY | b2 Summary

b2 is a C++ library typically used in Utilities, Math applications. b2 has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

The solution of arbitrary polynomial systems is an area of active research, and has many applications in math, science and engineering. This program, Bertini 2, builds on the success of the first Bertini program, and seeks to eventually replace it entirely, as a powerful numerical engine. The theoretical basis for the solution of polynomials with Bertini is a theorem which gives a statement on the number of solutions such a system may have, together with the numerical computational tool of "homotopy continuation", the act of "continuing" from one system into another through a "homotopy", as depicted in the below diagram.
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              b2 has a low active ecosystem.
              It has 81 star(s) with 32 fork(s). There are 18 watchers for this library.
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              It had no major release in the last 6 months.
              There are 64 open issues and 50 have been closed. On average issues are closed in 189 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of b2 is 2.0alpha6

            kandi-Quality Quality

              b2 has no bugs reported.

            kandi-Security Security

              b2 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              b2 does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

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              b2 releases are not available. You will need to build from source code and install.

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            b2 Key Features

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            b2 Examples and Code Snippets

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            Community Discussions

            QUESTION

            Excel: Display collection of month names generated from start and end date?
            Asked 2021-Jun-15 at 22:30

            I am trying to generate a table to record articles published each month. However, the months I work with different clients vary based on the campaign length. For example, Client A is on a six month contract from March to September. Client B is on a 12 month contract starting from February.

            Rather than creating a bespoke list of the relevant months each time, I want to automatically generate the list based on campaign start and finish.

            Here's a screenshot to illustrate how this might look:

            Below is an example of expected output from the above, what I would like to achieve:

            Currently, the only month that's generated is the last one. And it goes into A6 (I would have hoped A5, but I feel like I'm trying to speak a language using Google Translate, so...).

            Here's the code I'm using:

            ...

            ANSWER

            Answered 2021-Jun-15 at 11:11

            Make an Array with the month names and then loop trough it accordting to initial month and end month:

            Source https://stackoverflow.com/questions/67984399

            QUESTION

            Google Sheets QUERY of discontinuous columns in order to import desired range
            Asked 2021-Jun-15 at 18:12

            I have two google sheets in the same workbook and I am trying to import certain columns from one into the other sheet based on what hour of class was chosen. For example, I have the Date in column A, Name in B, Email in C, and Number in D and other stuff, then the Class in I.

            Column A - Date Column B - Name Column C - Email Column D - Number ... Column I - Class

            My goal is to import column B through D if column I has a certain class. I tried a using this if statemnt: =if('Confirmação'!I2 = A1,(=importrange("sheet_url","Confirmação!B2:D2")), "NOPE") where A1 has the name of the class to look for, but it resulted in a #Error.

            Then I tried a variety of query such as the following: =QUERY({'Confirmação'!B2:D2,'Confirmação'!I2},"Where I = 'Terça 19h English 1'") =QUERY({'Confirmação'!B2:D2, 'Confirmação'!I2},"Where 'Confirmação'!I = 'Terça 19h English 1'")

            and also added the IfError: =iferror(QUERY('Confirmação'!B4:I4,"Where I = 'Terça 19h English 1'"),"Vaga")

            Could someone correct my functions or help with a google script? Thank you! Very much appreciated! (Sorry about the Portugues-it's a project I am working on in Brazil)

            ...

            ANSWER

            Answered 2021-Jun-15 at 17:44

            Instead of using a QUERY, you can use the =FILTER() function to solve your problem. Doing the following:

            Source https://stackoverflow.com/questions/67990961

            QUESTION

            Google Sheets - Try to do sumifs with 2 conditions on a merged cells
            Asked 2021-Jun-15 at 17:51

            I have this situation on google sheets

            image

            I wanted to make a monthly report with sumifs with 2 conditions like the image above. But all I got was errors.

            Code I am using

            =sumifs(D2:D13;D1:G1;C16;B2:B13;or(B2:B13="apple","cherry","watermelon"))

            ...

            ANSWER

            Answered 2021-Jun-12 at 06:30

            You may use combination of multiple sumifs to solve your calculation since you won't know which will be the first row item that has market value and sum of amount of other fruits will return 0, therefore the calculation will still give correct total.

            Source https://stackoverflow.com/questions/67945692

            QUESTION

            Split Function - divide cell by string
            Asked 2021-Jun-15 at 15:00

            I am trying to divide merged information from one cell into separate cells.

            one cell:

            amount:2 price:253,18 price2:59,24 EU status:WBB NAS MRR OWA PXA min:1 opt:3 category: PNE code z:195750

            divided data: (I want to export each part into another cell)

            amount:2 price:253,18 price2:59,24 EU status:WBB NAS MRR OWA PXA min:1 opt:3 category: PNE code z:195750

            I can't simply divide by finding empty space, status cell which is case-sensitive | status:WBB NAS MRR OWA PXA| has a different data range with spaces that can't be divided.

            Split ( expression [,delimiter] [,limit] [,compare] )

            ...

            ANSWER

            Answered 2021-May-24 at 11:44

            As the order is the same one way is to simply search for adjacent key names & parse out whats in-between:

            Source https://stackoverflow.com/questions/67670930

            QUESTION

            Create new rows in a dataframe by range of dates
            Asked 2021-Jun-15 at 11:48

            I need to generate a list of dates in a dataframe by days and that each day is a row in the new dataframe, taking into account the start date and the end date of each record.

            Input Dataframe:

            A B Start End A1 B1 2021-05-15 00:00:00 2021-05-17 00:00:00 A1 B2 2021-05-30 00:00:00 2021-06-02 00:00:00 A2 B3 2021-05-10 00:00:00 2021-05-12 00:00:00 A2 B4 2021-06-02 00:00:00 2021-06-04 00:00:00

            Expected Output:

            A B Start End A1 B1 2021-05-15 00:00:00 2021-05-16 00:00:00 A1 B1 2021-05-16 00:00:00 2021-05-17 00:00:00 A1 B2 2021-05-30 00:00:00 2021-05-31 00:00:00 A1 B2 2021-05-31 00:00:00 2021-06-01 00:00:00 A1 B2 2021-06-01 00:00:00 2021-06-02 00:00:00 A2 B3 2021-05-10 00:00:00 2021-05-11 00:00:00 A2 B3 2021-05-11 00:00:00 2021-05-12 00:00:00 A2 B4 2021-06-02 00:00:00 2021-06-03 00:00:00 A2 B4 2021-06-03 00:00:00 2021-06-04 00:00:00 ...

            ANSWER

            Answered 2021-Jun-15 at 11:48

            QUESTION

            Import Sets from Excel to CPLEX
            Asked 2021-Jun-15 at 09:42

            I have the following Sets:

            ...

            ANSWER

            Answered 2021-Jun-04 at 15:13

            You can do that through strings:

            .mod

            Source https://stackoverflow.com/questions/67839052

            QUESTION

            Need to convert a dictionary which contains two lists into Pandas DataFrame
            Asked 2021-Jun-15 at 05:52

            So the dictionary I got is as below:

            ...

            ANSWER

            Answered 2021-Jun-15 at 05:52
            d={'a': [['time1', 'a1'], ['time2', 'a2'],['time100','a100']], 'b': [['time1', 'b1'], ['time2', 'b2'],['time100','b100']], 'c': [['time1', 'c1'], ['time2', 'c2'],['time100','c100']]}
            

            Source https://stackoverflow.com/questions/67979956

            QUESTION

            Kivy Python - previously created layouts aren't displayed in scroll view and in page layout
            Asked 2021-Jun-15 at 01:11

            this code returns me a black screen, what am I doing wrong?

            python file:

            ...

            ANSWER

            Answered 2021-Jun-15 at 01:11

            The problem is that the kv language insists that class names start with a capital letter. The documentation says:

            Keep class names capitalized to avoid syntax errors

            I think your code will work if you change all your class names to meet that requirement.

            .

            Source https://stackoverflow.com/questions/67976824

            QUESTION

            google sheet: combine countifs() and trim()
            Asked 2021-Jun-15 at 01:02

            I use

            =trim(cell)<>""

            to check if the cell is not blank/null or white space.

            I want to count how many row from row1 to row100 where there is no blank or null or any white space(s) in the column A or B. So it will count only if both column A and B has value (not blank/null/space).

            When using countifs() to count item using multiple criteria. I can't use trim() as the parameter. For example :

            ...

            ANSWER

            Answered 2021-Jun-14 at 20:09

            You can not use countifs for this problem.

            As you can see in this article if you need complex condition you need to use "SUMPRODUCT" on this article referenced from the previews one.

            For you problem this is the solution:

            Source https://stackoverflow.com/questions/67976322

            QUESTION

            Why my ArrayFormula is giving error? How do I correct it? (I'm not looking for another Arrayformula as solutions!)
            Asked 2021-Jun-15 at 00:20

            I wanted a ArrayFormula at C1 which gives the required result as shown.

            Entry sheet:
            (Column C is my required column)

            Date Entered is the date when the Name is Assigned a group i.e. a, b, c, d, e, f

            Criteria:

            1. The value of count is purely on basis of Date Entered (if john is assigned a on lowest date(10-Jun) then count value is 1, if rose is assigned a on 2nd lowest date(17-Jun) then count value is 2).
            2. The value of count does not change even when the data is sorted in any manner because Date Entered column values is always permanent & does not change.
            3. New entry date could be any date not necessarily highest date (If a new entry with name Rydu is assigned a on 9-Jun then the it's count value will become 1, then john's (10-Jun) will become 2 and so on)

            Example:

            After I sort the data in any random order say like this:

            Random ordered sheet:
            (Count value remains permanent)

            And when I do New entries in between (Row 4th & 14th) and after last row (Row 17th):

            Random Ordered sheet:
            (Doesn't matter where I do)

            I already got 2 different ArrayFormula which gives the required results:
            1. ={"AF Formula1"; ArrayFormula(IF(B2:B="", "", COUNTIFS(B$2:B, "="&B2:B, D$2:D, <"&D2:D)+1))}
            2. ={"AF Formula2";INDEX(IFERROR(1/(1/COUNTIFS(B2:B, B2:B, ROW(B2:B), "<="&ROW(B2:B)))))}
            I'm not looking for another Arrayformula as solutions. What I want is to know what is wrong in my ArrayFormula? and how do I correct it?

            I tried to figure my own ArrayFormula but it's not working:

            I got Formula for each cell:
            =RANK($D2,FILTER($D$2:$D, $B$2:$B=$B2),1)
            I figured out Filter doesn't work with ArrayFormula so I had to take a different approach.

            I took help from my previous question answer (Arrayformula at H3) which was similar since in both cases each cell FILTER formula returns more than 1 value. (It was actually answered by player0)

            Using the same technique I came up with this Formula which works absolutely fine :

            =RANK($D2, ARRAYFORMULA(TRANSPOSE(SPLIT(VLOOKUP($B2, SUBSTITUTE(TRIM(SPLIT(FLATTEN(QUERY(QUERY({$B:$B&"×", $D:$D}, "SELECT MAX(Col2) WHERE Col2 IS NOT NULL GROUP BY Col2 PIVOT Col1", 1),, 9^9)), "×")), " ", ","), 2, 0), ","))), 1)

            Now when I tried converting it to ArrayFormula: ($D2 to $D2:$D & $B2 to $B2:$B)

            =ARRAYFORMULA(RANK($D2:$D,TRANSPOSE(SPLIT(VLOOKUP($B2:$B, SUBSTITUTE(TRIM(SPLIT(FLATTEN(QUERY(QUERY({$B:$B&"×", $D:$D}, "SELECT MAX(Col2) WHERE Col2 IS NOT NULL GROUP BY Col2 PIVOT Col1", 1),, 9^9)), "×")), " ", ","), 2, 0), ",")), 1))

            It gives me an error "Did not find value '' in VLOOKUP evaluation", I figured out that the problem is only in VLOOKUP when I change $B2 to $B2:$B.

            I'm sure VLOOKUP works with ArrayFormula, I fail to understand where my formula is going wrong! Please help me correct my ArrayFormula.

            Here is the editable sheet link

            ...

            ANSWER

            Answered 2021-Jun-14 at 20:45

            I have answered you on the tab in your shared sheet called My Practice thusly:

            You cannot split a two column array as you have attempted to do in cell CI2. That is why your formula does not work. You can only split a ONE column array.

            I understand you are trying to learn, but attempting to use complicated formulas like that is going to make it harder I'm afraid.

            Source https://stackoverflow.com/questions/67975406

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