In topology,Find all points of the set B={(-2,-2),(1,1),(0,-1),(0,3)}, which are contained in the closed ball...












-1












$begingroup$


Find all points of the set B={(-2,-2),(1,1),(0,-1),(0,3)}, which are contained in the closed ball B((0,0),2) in the metric space (R^2,d1),where d1 is defined by the formula



d1((x1,y1),(x2,y2))=|x1-x2|+|y1-y2|.



Does anybody clearly explain and solve by formally ?



Many thanks!










share|cite|improve this question











$endgroup$

















    -1












    $begingroup$


    Find all points of the set B={(-2,-2),(1,1),(0,-1),(0,3)}, which are contained in the closed ball B((0,0),2) in the metric space (R^2,d1),where d1 is defined by the formula



    d1((x1,y1),(x2,y2))=|x1-x2|+|y1-y2|.



    Does anybody clearly explain and solve by formally ?



    Many thanks!










    share|cite|improve this question











    $endgroup$















      -1












      -1








      -1





      $begingroup$


      Find all points of the set B={(-2,-2),(1,1),(0,-1),(0,3)}, which are contained in the closed ball B((0,0),2) in the metric space (R^2,d1),where d1 is defined by the formula



      d1((x1,y1),(x2,y2))=|x1-x2|+|y1-y2|.



      Does anybody clearly explain and solve by formally ?



      Many thanks!










      share|cite|improve this question











      $endgroup$




      Find all points of the set B={(-2,-2),(1,1),(0,-1),(0,3)}, which are contained in the closed ball B((0,0),2) in the metric space (R^2,d1),where d1 is defined by the formula



      d1((x1,y1),(x2,y2))=|x1-x2|+|y1-y2|.



      Does anybody clearly explain and solve by formally ?



      Many thanks!







      general-topology






      share|cite|improve this question















      share|cite|improve this question













      share|cite|improve this question




      share|cite|improve this question








      edited Jan 11 at 15:48







      Arda Batuhan Demir

















      asked Jan 9 at 16:23









      Arda Batuhan DemirArda Batuhan Demir

      11




      11






















          2 Answers
          2






          active

          oldest

          votes


















          1












          $begingroup$

          It's pretty straight forward isn't it? You are told that the distance between points (a, b) and (c, d) is |a- c|+ |b- d| so the distance from (0, 0) to (x, y) is |x- 0|+ |y- 0|= |x|- |y|. What is the distance from (0, 0) to (-2, -2)? From (0, 0) to (1, 1)? From (0, 0) to (0, -1)? From (0, 0) to (0, 3)?






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 10 at 16:35










          • $begingroup$
            Could you more than explain ? because I couldnt be understand.....Could you solving by formally by step by step ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:50



















          0












          $begingroup$

          By definition you can check that only $(0,-1)$ has distance less than $2$ from the origin.






          share|cite|improve this answer











          $endgroup$













          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 9 at 18:41










          • $begingroup$
            Could you more than detail and solving by formally ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:49











          Your Answer





          StackExchange.ifUsing("editor", function () {
          return StackExchange.using("mathjaxEditing", function () {
          StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
          StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
          });
          });
          }, "mathjax-editing");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "69"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          noCode: true, onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3067642%2fin-topology-find-all-points-of-the-set-b-2-2-1-1-0-1-0-3-which-are%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1












          $begingroup$

          It's pretty straight forward isn't it? You are told that the distance between points (a, b) and (c, d) is |a- c|+ |b- d| so the distance from (0, 0) to (x, y) is |x- 0|+ |y- 0|= |x|- |y|. What is the distance from (0, 0) to (-2, -2)? From (0, 0) to (1, 1)? From (0, 0) to (0, -1)? From (0, 0) to (0, 3)?






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 10 at 16:35










          • $begingroup$
            Could you more than explain ? because I couldnt be understand.....Could you solving by formally by step by step ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:50
















          1












          $begingroup$

          It's pretty straight forward isn't it? You are told that the distance between points (a, b) and (c, d) is |a- c|+ |b- d| so the distance from (0, 0) to (x, y) is |x- 0|+ |y- 0|= |x|- |y|. What is the distance from (0, 0) to (-2, -2)? From (0, 0) to (1, 1)? From (0, 0) to (0, -1)? From (0, 0) to (0, 3)?






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 10 at 16:35










          • $begingroup$
            Could you more than explain ? because I couldnt be understand.....Could you solving by formally by step by step ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:50














          1












          1








          1





          $begingroup$

          It's pretty straight forward isn't it? You are told that the distance between points (a, b) and (c, d) is |a- c|+ |b- d| so the distance from (0, 0) to (x, y) is |x- 0|+ |y- 0|= |x|- |y|. What is the distance from (0, 0) to (-2, -2)? From (0, 0) to (1, 1)? From (0, 0) to (0, -1)? From (0, 0) to (0, 3)?






          share|cite|improve this answer









          $endgroup$



          It's pretty straight forward isn't it? You are told that the distance between points (a, b) and (c, d) is |a- c|+ |b- d| so the distance from (0, 0) to (x, y) is |x- 0|+ |y- 0|= |x|- |y|. What is the distance from (0, 0) to (-2, -2)? From (0, 0) to (1, 1)? From (0, 0) to (0, -1)? From (0, 0) to (0, 3)?







          share|cite|improve this answer












          share|cite|improve this answer



          share|cite|improve this answer










          answered Jan 9 at 16:58









          user247327user247327

          11k1515




          11k1515












          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 10 at 16:35










          • $begingroup$
            Could you more than explain ? because I couldnt be understand.....Could you solving by formally by step by step ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:50


















          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 10 at 16:35










          • $begingroup$
            Could you more than explain ? because I couldnt be understand.....Could you solving by formally by step by step ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:50
















          $begingroup$
          Could you draw and more then detailed to solving, please ?
          $endgroup$
          – Arda Batuhan Demir
          Jan 10 at 16:35




          $begingroup$
          Could you draw and more then detailed to solving, please ?
          $endgroup$
          – Arda Batuhan Demir
          Jan 10 at 16:35












          $begingroup$
          Could you more than explain ? because I couldnt be understand.....Could you solving by formally by step by step ? Many thanks...
          $endgroup$
          – Arda Batuhan Demir
          Jan 11 at 15:50




          $begingroup$
          Could you more than explain ? because I couldnt be understand.....Could you solving by formally by step by step ? Many thanks...
          $endgroup$
          – Arda Batuhan Demir
          Jan 11 at 15:50











          0












          $begingroup$

          By definition you can check that only $(0,-1)$ has distance less than $2$ from the origin.






          share|cite|improve this answer











          $endgroup$













          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 9 at 18:41










          • $begingroup$
            Could you more than detail and solving by formally ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:49
















          0












          $begingroup$

          By definition you can check that only $(0,-1)$ has distance less than $2$ from the origin.






          share|cite|improve this answer











          $endgroup$













          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 9 at 18:41










          • $begingroup$
            Could you more than detail and solving by formally ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:49














          0












          0








          0





          $begingroup$

          By definition you can check that only $(0,-1)$ has distance less than $2$ from the origin.






          share|cite|improve this answer











          $endgroup$



          By definition you can check that only $(0,-1)$ has distance less than $2$ from the origin.







          share|cite|improve this answer














          share|cite|improve this answer



          share|cite|improve this answer








          edited Jan 9 at 17:20









          amWhy

          1




          1










          answered Jan 9 at 16:28









          CHOUDHARY bhim senCHOUDHARY bhim sen

          1239




          1239












          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 9 at 18:41










          • $begingroup$
            Could you more than detail and solving by formally ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:49


















          • $begingroup$
            Could you draw and more then detailed to solving, please ?
            $endgroup$
            – Arda Batuhan Demir
            Jan 9 at 18:41










          • $begingroup$
            Could you more than detail and solving by formally ? Many thanks...
            $endgroup$
            – Arda Batuhan Demir
            Jan 11 at 15:49
















          $begingroup$
          Could you draw and more then detailed to solving, please ?
          $endgroup$
          – Arda Batuhan Demir
          Jan 9 at 18:41




          $begingroup$
          Could you draw and more then detailed to solving, please ?
          $endgroup$
          – Arda Batuhan Demir
          Jan 9 at 18:41












          $begingroup$
          Could you more than detail and solving by formally ? Many thanks...
          $endgroup$
          – Arda Batuhan Demir
          Jan 11 at 15:49




          $begingroup$
          Could you more than detail and solving by formally ? Many thanks...
          $endgroup$
          – Arda Batuhan Demir
          Jan 11 at 15:49


















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Mathematics Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          Use MathJax to format equations. MathJax reference.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3067642%2fin-topology-find-all-points-of-the-set-b-2-2-1-1-0-1-0-3-which-are%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Can a sorcerer learn a 5th-level spell early by creating spell slots using the Font of Magic feature?

          Does disintegrating a polymorphed enemy still kill it after the 2018 errata?

          A Topological Invariant for $pi_3(U(n))$