Proposals
updated 16.05.2024
| Problem
10890,
Amer. Math. Monthly 108
(2001), 668. |
solution: Amer. Math. Monthly 110 (2003), 62-63. |
| Problem 10991, Amer. Math. Monthly 110 (2003), 155. | solution:
Amer. Math. Monthly 111
(2004), 826-827. |
| Problem
11136,
Amer. Math. Monthly 112
(2005), 181. |
solution:
Amer. Math. Monthly 113 (2006),
763-764. |
| Problem
11147,
Amer. Math. Monthly 112
(2005), 366. (with P. Gorkin) |
solution:
Amer. Math. Monthly 113
(2006), 854. |
| Problem
11185,
Amer. Math. Monthly 112
(2005), 840. (with R. Brueck) |
solution: Amer. Math. Monthly 114 (2007), 552-554. |
| Problem
11456, Amer. Math.
Monthly 116
(2009), 747. |
solution: Amer. Math. Monthly 118 (2011), 185. |
| Aufgabe
1281,
Elemente der Mathematik 65
(2010), 127. |
solution: Elemente der Mathematik 66 (2011), 133-134. |
| Problem
11584, Amer.
Math. Monthly 118
(2011), 558. (with J. Noel) |
solution:
Amer. Math. Monthly 120
(2013), 661-662. |
| Problem 11684, Amer. Math.
Monthly 120 (2013),
76. (with R. Rupp) |
solution:
Amer. Math. Monthly 122
(2015), 80-81. |
| Problem 1947,
Math. Magazine 87 (2014), 230. (with. J. Noel) |
solution: Math. Magazine 88 (2015), 288. |
| Aufgabe 1350, Elemente der Mathematik 71 (2016), 84 | solution: Elemente der Mathematik 72 (2017), 84-85. |
| Quicky 1075
Math. Magazine 90 (2017), 384 |
solution: Math. Magazine 90 (2017), 393 |
| Aufgabe 1383
Elemente
der Mathematik 74 (2019), 38 (with R. Rupp) |
solution: Elemente
der Mathematik 75 (2020),
38-41. |
Aufgabe 1431
Elemente
der Mathematik 78 (2023), 44 (with R. Rupp) |
solution: Elemente
der Mathematik 79 (2024),39-42
|
Problem 12406
Amer. Math. Monthly
130 (2023), 679 (with R. Rupp) |
solution: Amer. Math. Monthly ,
|
Aufgabe 1438
Elemente
der Mathematik 78 (2023), 135 (with R. Rupp) |
solution: Elemente
der Mathematik ,
|
Problem 2181
Math. Magazine
96 (2023), 566 (with P. Pflug and R. Rupp) |
solution: Math. Mag. ,
|
Aufgabe
1443
Elemente
der Mathematik 79 (2024), 38 |
solution: Elemente
der Mathematik ,
|
Quicky
1140
Math. Magazine
97 (2024), 224 (with R. Rupp) |
solution:
Math. Magazine 97 (2024), 233
|
Published solutions of Exercises
| Aufgabe
901, Elemente Math. 38
(1983), 128. |
solution: Elemente Math. 39 (1984), 130-132. |
| Problem
E 3325, Amer. Math. Monthly 96
(1989), 445. |
solution: Amer. Math. Monthly 97 (1990), 855-856. |
| Aufgabe
Q68, EMS Newsletter 23
(1997), 21. |
solution: EMS Newsletter 25 (1997), 27. |
| Problem
11684 Amer. Math. Monthly 120 (2013), 76. |
solution: Amer. Math.
Monthly 122
(2015), 80-81 (with R. Rupp). |
| Problem
4816 Crux 49 (2023), 101. |
solution: Crux
49
(2023), 392-393 (with R. Rupp). |
| Problem
12290 Amer. Math. Monthly 128 (2021), 946. |
solution: Amer. Math.
Monthly
130
(2023), 774 (with R. Rupp). |
| Problem 4835,
Crux Mathematicorum 49 (2023), 213. |
solution:
Crux Mathematicorum 49 (2023), 502-503 (with R. Rupp) |
| Problem
12308, Amer. Math. Monthly 129 (2022), 285. |
solution: Amer. Math. Monthly 131 (2024), 77-78
|
submitted solutions
| Problem E 3329, Amer.
Math. Monthly 96 (1989), 446. |
solution: Amer. Math. Monthly 98 (1991), 267-268. |
| Problem 6654, Amer.
Math. Monthly 98 (1991), 273. |
solution: Amer. Math. Monthly 99 (1992), 686. |
| Problem 6648, Amer.
Math. Monthly 98 (1991), 63. |
solution: Amer. Math. Monthly 99 (1992), 876. |
| Problem 10588/10595,
Amer. Math. Monthly 104 (1997), 456. |
solution: Amer. Math. Monthly 105 (1998), 376. |
| Problem 10605 ,
Amer. Math. Monthly 104 (1997), 567. |
solution: Amer. Math. Monthly 106 (1999), 173-174. |
| Problem 10624,
Amer. Math. Monthly 104 (1997), 871. |
solution: Amer. Math. Monthly 106 (1999), 271. |
| Problem 10638,
Amer. Math. Monthly 105 (1998), 69. |
solution: Amer. Math. Monthly 106 (1999), 591-592. |
| Problem 10651,
Amer. Math. Monthly 105, (1998), 271. |
solution: Amer. Math. Monthly 106 (1999), 782. |
| Problem 10697,
Amer. Math. Monthly 105, (1998), 955. |
solution: Amer. Math. Monthly 107 (2000), 283-284. |
| Problem
10739, Amer. Math. Monthly 106, (1999), 586. |
solution: Amer. Math. Monthly 107 (2000), 757. |
| Problem 10747,
Amer. Math. Monthly 106, (1999), 685. |
solution: Amer. Math. Monthly 107 (2000), 757-758. |
| Problem 10768,
Amer. Math. Monthly 106, (1999), 963. |
solution: Amer. Math. Monthly 108 (2001), 82. |
| Problem 10854,
Amer. Math. Monthly 108 (2001), 171. |
solution: Amer. Math.
Monthly 111 (2004), 725-726. |
| Problem 10857a,
Amer. Math. Monthly 108 (2001), 172. |
solution: Amer. Math.
Monthly 109 (2002), 573. |
| Problem 11070,
Amer. Math. Monthly 111 (2004), 259. |
solution: Amer. Math.
Monthly 113 (2006), 83-84. |
| Problem 11202, Amer. Math. Monthly 113 (2006), 179. | solution: Amer. Math.
Monthly 114 (2007), 171. |
| Problem 11210,
Amer. Math. Monthly 113 (2006), 267. |
solution: Amer. Math. Monthly 114 (2007), 749. |
| Problem 11226, Amer. Math. Monthly 113 (2006), 460. | solution: Amer. Math. Monthly 115 (2008), 76. |
| Problem 11333,
Amer. Math. Monthly 114 (2007), 926. |
solution: Amer. Math.
Monthly 116 (2009), 847. |
| Problem 11402,
Amer. Math. Monthly 115 (2008), 949. |
solution: Amer. Math.
Monthly 117 (2010), 563-564. |
| Problem 11548,
Amer. Math. Monthly 118 (2011), 85. (with J. Noel) |
solution: Amer. Math.
Monthly 119 (2012), 612-613. |
| Problem 11578, Amer. Math. Monthly 118 (2011), 464. | solution: Amer. Math.
Monthly 120 (2013), 177-178. |
| Problem
11639, Amer. Math. Monthly 119 (2012), 345. (with J. Noel) |
solution: Amer. Math.
Monthly 121 (2014), 173-174. |
| Problem
11935, Amer. Math. Monthly 123 (2016), 832. |
solution: Amer. Math.
Monthly 125 (2018), 570. |
| Problem
12256, Amer. Math. Monthly 128 (2021), 478. (with R. Rupp) |
solution: Amer. Math.
Monthly 130 (2023), 289-290.
|
| Problem
12288, Amer. Math. Monthly 128 (2021), 946. (with R. Rupp) |
solution: Amer. Math.
Monthly 130 (2023), 687-688 |
| Problem
12326, Amer. Math. Monthly 129 (2022), 487. (with P. Pflug, A. Sasane) |
solution: Amer. Math.
Monthly |
| Problem
12312, Amer. Math. Monthly 129 (2022), 286. (with G. Herzog) |
solution: Amer. Math.
Monthly |
Problem
12338, Amer. Math. Monthly 129 (2022), 686. (with R.Rupp) |
solution: Amer. Math.
Monthly |
Problem
12340, Amer. Math. Monthly 129 (2022), 686. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12347, Amer. Math. Monthly 129 (2022), 786. |
solution: Amer. Math.
Monthly |
Problem
12362, Amer. Math. Monthly 129 (2022), 986. |
solution: Amer. Math.
Monthly |
Problem
12375, Amer. Math. Monthly 130 (2023) 188. |
solution: Amer. Math.
Monthly |
Problem
12372, Amer. Math. Monthly 130 (2023), 187. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12380, Amer. Math. Monthly 130 (2023), 285. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12388, Amer. Math. Monthly 130 (2023), 385. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12389, Amer. Math. Monthly 130 (2023), 386. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12398, Amer. Math. Monthly 130 (2023), 587. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12407, Amer. Math. Monthly 130 (2023), 679. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12415, Amer. Math. Monthly 130 (2023), 765. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12422, Amer. Math. Monthly 130 (2023), 862. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12433, Amer. Math. Monthly 131 (2024), 76. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12436, Amer. Math. Monthly 131 (2024), 76. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12451, Amer. Math. Monthly 131 (2024), ??. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12459, Amer. Math. Monthly 131 (2024), 384. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12460, Amer. Math. Monthly 131 (2024), 384. (with R. Rupp) |
solution: Amer. Math.
Monthly |
Problem
12470, Amer. Math. Monthly 131 (2024), ??. (with R. Rupp) |
solution: Amer. Math.
Monthly |
| Problem 1860,
Math. Mag. 83 (2010), 392. |
solution: Math.
Mag. 84 (2011), 392. |
| Problem 1863, Math. Mag. 84 (2011), 64. | solution: Math.
Mag. 85 (2012), 65-66. |
| Problem 1867,
Math. Mag.
84 (2011), 150. |
solution: Math. Mag. 85 (2012), 152-154. |
| Problem 1871,
Math. Mag. 84 (2011), 229. |
solution: Math. Mag. 85 (2012), 230-231. |
| Problem
2116, Math. Mag. 94 (2021), 150. (with R. Rupp) |
solution: Math. Mag. 95 (2022),158-159
|
| Problem
2117, Math. Mag. 94 (2021), 150. (with R. Rupp and A.Sasane) |
solution: Math. Mag. 95 (2022),160
|
| Problem
2118, Math. Mag. 94 (2021), 150. |
solution: Math. Mag. 95 (2022),160-161
|
| Problem
2128, Math. Mag. 94 (2021), 308. |
solution: Math. Mag 95 (2022), 409-410
|
| Problem
2141, Math. Mag. 95 (2022), 157. (with R. Rupp) |
solution: Math. Mag 96 (2023), 192-193
|
| Problem
2147, Math. Mag. 95 (2022), 242. (with R. Rupp) |
solution: Math. Mag 96 (2023), 363-365
|
| Problem
2167, Math. Mag. 96 (2023), 190. (with R. Rupp) |
solution: Math. Mag
|
| Problem
2171, Math. Mag. 96 (2023), 359. (with R. Rupp) |
solution: Math. Mag
|
| Problem
2176, Math. Mag. 96 (2023), 468. (with R. Rupp) |
solution: Math. Mag
|
| Problem
2185, Math. Mag. 96 (2023),567. (with R. Rupp) |
solution: Math. Mag
|
| Problem
2184, Math. Mag. 96 (2023), 567. (with P.Pflug and R. Rupp) |
solution: Math. Mag
|
| Problem
2186, Math. Mag. 97 (2024), 81. (with R. Rupp) |
solution: Math. Mag
|
| Problem
2187, Math. Mag. 97 (2024), 81. (with R. Rupp) |
solution: Math. Mag
|
| Problem
2193, Math. Mag. 97 (2024), 223. (with R. Rupp) |
solution: Math. Mag
|
| Problem 4615,
Crux Mathematicorum 47 (2021), 97. (with R. Rupp) |
solution:
Crux Mathematicorum 47 (2021), 361.
|
| Problem 4634,
Crux Mathematicorum 47 (2021), 200. (with R. Rupp) |
solution:
Crux Mathematicorum 47 (2021), 460. |
| Problem 4636,
Crux Mathematicorum 47 (2021), 200. (with R. Rupp) |
solution:
Crux Mathematicorum 47 (2021), 462. |
| Problem 4657,
Crux Mathematicorum 47 (2021), 301. (with R. Rupp) |
solution:
Crux Mathematicorum 48 (2022), 51 |
| Problem 4747,
Crux Mathematicorum 48 (2022), 282. (with R. Rupp) |
solution:
Crux Mathematicorum 48 (2022), 646-647 |
| Problem 4763*,
Crux Mathematicorum 48 (2022), 421. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 109. |
| Problem 4771,
Crux Mathematicorum 48 (2022), 483. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 161-162. |
| Problem 4772,
Crux Mathematicorum 48 (2022), 483. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 162. |
| Problem 4777*,
Crux Mathematicorum 48 (2022), 484. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 166-168. |
| Problem 4779*,
Crux Mathematicorum 48 (2022), 484. |
solution:
Crux Mathematicorum 49 (2023), 169-170. |
| Problem 4780,
Crux Mathematicorum 48 (2022), 484. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 170-172. |
| Problem 4801,
Crux Mathematicorum 49 (2023), 44. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 326-327. |
| Problem 4803*,
Crux Mathematicorum 49 (2023), 44. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 329 |
| Problem 4805,
Crux Mathematicorum 49 (2023), 44. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 331. |
| Problem 4809,
Crux Mathematicorum 49 (2023), 45. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 334-335 |
| Problem 4810,
Crux Mathematicorum 49 (2023), 45. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 325-326. |
| Problem 4811,
Crux Mathematicorum 49 (2023), 101. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 386 |
| Problem 4817,
Crux Mathematicorum 49 (2023), 102. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 393-394. |
| Problem 4819,
Crux Mathematicorum 49 (2023), 102. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 395-396. |
| Problem 4822,
Crux Mathematicorum 49 (2023), 156. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 446-447. |
| Problem 4825,
Crux Mathematicorum 49 (2023), 157. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 449-451. |
| Problem 4826,
Crux Mathematicorum 49 (2023), 157. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 452. |
| Problem 4828,
Crux Mathematicorum 49 (2023), 157. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 454-455. |
| Problem 4830,
Crux Mathematicorum 49 (2023), 158. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 457-458. |
| Problem 4836,
Crux Mathematicorum 49 (2023), 214. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 503-505 |
| Problem 4844,
Crux Mathematicorum 49 (2023), 273. (with R. Rupp) |
solution:
Crux Mathematicorum 49 (2023), 547 |
| Problem 4850 (old),
Crux Mathematicorum 49 (2023), 274. (with R. Rupp) |
solution:
Crux Mathematicorum ---- |
| Problem 4854,
Crux Mathematicorum 49 (2023), 323. (with R. Rupp) |
solution:
Crux Mathematicorum 50 (2024) 46-48. |
| Problem 4855,
Crux Mathematicorum 49 (2023), 323. (with R. Rupp) |
solution:
Crux Mathematicorum 50 (2024), 48-49. |
| Problem 4857,
Crux Mathematicorum 49 (2023), 323. |
solution:
Crux Mathematicorum 50 (2024), 50. |
| Problem 4862,
Crux Mathematicorum 49 (2023), 375. (with R. Rupp) |
solution:
Crux Mathematicorum 50 (2024), 88-90 |
| Problem 4866,
Crux Mathematicorum 49 (2023), 376. (with R. Rupp) |
solution:
Crux Mathematicorum 50 (2024), 93-94 |
| Problem 4870,
Crux Mathematicorum 49 (2023), 377. (with R. Rupp) |
solution:
Crux Mathematicorum 50 (2024), 101 |
| Problem 4889,
Crux Mathematicorum 49 (2023), 491. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4893,
Crux Mathematicorum 49 (2023), 539. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4894,
Crux Mathematicorum 49 (2023), 539. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4896,
Crux Mathematicorum 49 (2023), 540. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4900,
Crux Mathematicorum 49 (2023), 541. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4903,
Crux Mathematicorum 50 (2024), 37. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4904,
Crux Mathematicorum 50 (2024), 37. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4905,
Crux Mathematicorum 50 (2024), 37. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4909,
Crux Mathematicorum 50 (2024), 38. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4910,
Crux Mathematicorum 50 (2024), 38. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4913,
Crux Mathematicorum 50 (2024), 82. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4914,
Crux Mathematicorum 50 (2024), 82. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4915,
Crux Mathematicorum 50 (2024), 82. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4918,
Crux Mathematicorum 50 (2024), 83. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4920,
Crux Mathematicorum 50 (2024), 84. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4924,
Crux Mathematicorum 50 (2024), 148. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4925,
Crux Mathematicorum 50 (2024), 148. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4929,
Crux Mathematicorum 50 (2024), 149. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4930,
Crux Mathematicorum 50 (2024), 149. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Problem 4937,
Crux Mathematicorum 50 (2024), 200. (with R. Rupp) |
solution:
Crux Mathematicorum |
| Aufgabe 1339, Elem.
Math. 70 (2015), 82. |
solution: Elem. Math. 71 (2016), 85-86. |
| Aufgabe 1428, Elem.
Math. 77 (2022), 196. (with R. Rupp) |
solution: Elem. Math. 78 (2023), 181-182. |
| Aufgabe 1434, Elem.
Math. 78 (2023), 85. (with R. Rupp) |
solution: Elem. Math. |
| Aufgabe 1435, Elem.
Math. 78 (2023), 85. (with R. Rupp) |
solution: Elem. Math. |
| Aufgabe 1437, Elem.
Math. 78 (2023), 135. (with R. Rupp) |
solution: Elem. Math. |
| Aufgabe 1441, Elem.
Math. 78 (2023), 180. (with R. Rupp) |
solution: Elem. Math. |
| Aufgabe 1442, Elem.
Math. 78 (2023), 180. (with R. Rupp) |
solution: Elem. Math. |
| Aufgabe 1447, Elem.
Math. 79 (2023), 84. (with R. Rupp) |
solution: Elem. Math. |
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