# BO DZING - NORTH WELL

This book is the twelfth of 18 in the projective geometry series & was published on January 3, 1956.

This book seems to be about Harmonic & Anharmonic cross ratios used in constructing geometric projections , invariants & the rules thereof. Note: some of the subject links go to the Mathematica website which has some kewl definition of the concepts & terms.

-------------------------------------------------------------------------------------------------------------------

? Link | Subject in English |

0 | Introduction 17th book in the little book series (Ming Dicts + Projective Geo.) |

1 | Construct Anharmonic divide intersect four arbitrary straight lines |

2 | Make arbitrary anharmonic divide join four arbitrary points |

3 | Affine Solution |

4 | Cevian construct division |

5 | Eqality problem - 2 arbitrary parallel lines construct another |

6 | Duality problem |

7 | 8-point circle example |

8 | Range multiply rule |

9 | Involution equality |

10 | Projectivity problem - find other double point when one is given (redux) |

11 | Construct projective change equality |

12 | Example Parabola projectivity |

13 | Euclidean conjugate example |

14 | Perspective range projectivity proof |

15 | Projective straight line make involution |

16 | Projective power straight line involution |

17 | Degenerate power projective condition straight line involution |

18 | Improper side envelope projection situation |

19 | Two legs inside circle part finite aribrary division |

20 | Geometry plane construction project |

21 | Duality e.g. pencil condition |

22 | Involution pencil situation |

23 | Anharmonic conjugate proof of 5-point fixed conic |

24 | Project straight line with same three principal mean (Brianchonia) |

25 | Harmonic Regulus duality |

26 | Cross ratio extends conic pencil |

27 | One intersetion proof duality |

28 | Anharmonic conjugate duality example solution |

29 | Example self duality anharmonic conjugate rule |

30 | Rule: two projective ranges on different bases are both perspective with the same range on any general line not through their intersection . |

31 | Polar condition conic example |

32 | Conic cross ratio condition |

33 | Construct conic proof |

34 | Anharmonic problem |

35 | First degree example hyperbolic involution |

36 | Self Involution case (I) |

37 | Involution pencil proof maximum rule example |

38 | 4-point change situation (invariants ?) |

39 | Four part form inside outside degenerate conic situation |

40 | Porism triangle |

41 | Ming wen & characters etc. 16th addition to the dictionary |

42 | Verse from the CHUNG VOO (inmost trust) hexagram in astral script - 13,2 |

Click here for large picture of the North Well (BO DZING) Cover Design |

### Tags

- north well
- projective geometry
- bo dzing
- ming
- cfr

### Comments

*Mark de LA says*Maybe when we get awe can animate some of the concepts with Cinderella or another tool & provide links to websites that explain the projective geometric concepts to make it easier. On the other hand part of the initiatory virtue of the student exercises is obtained less by memorizing the concepts & more the mathematical thinking .

### See Also

- Thought
**ZNUZ IS ZNEES - VOL 1 - 2nd edition**with 1211 viewings related by tag "cfr". - Thought
**BOOK CHAMELEON - first edition offering**with 451 viewings related by tag "cfr". - Thought
**Copy of - New at Breck's Website**with 391 viewings related by tag "cfr". - Thought
**ZNUZ IS ZNEES - VOLUME 2**with 328 viewings related by tag "cfr". - Thought
**BARBARA CUBED - The Manual of Pure Logic**with 270 viewings related by tag "cfr". - Thought
**September Blackberry Breakfast**with 237 viewings related by tag "CFR". - Thought
**ZNUZ IS ZNEES - VOL 4**with 165 viewings related by tag "cfr". - Thought
**ZNUZ IS ZNEES - volume III**with 160 viewings related by tag "cfr". - Thought
**Ming & Beyond**with 156 viewings related by tag "ming". - Thought
**MANUAL OF ELECTRO-COMBINATIONAL ENGINEERING**with 142 viewings related by tag "cfr". - Thought
**Book Chameleon 2nd edition**with 128 viewings related by tag "cfr". - Thought
**GRAMMAR OF CHANGES**with 122 viewings related by tag "cfr". - Thought
**TROPERMIC CALCULUS**with 105 viewings related by tag "cfr". - Thought
**Duality in the Context of Projective Geometry**with 84 viewings related by tag "projective geometry". - Thought
**The MING books**with 64 viewings related by tag "ming". - Thought
**MAW NI = DRAGON PEARLS**with 63 viewings related by tag "cfr". - Thought
**about: C.F. Russell - Wikipedia**with 61 viewings related by tag "cfr". - Thought
**Book of Radicals (SHU PU)**with 53 viewings related by tag "cfr". - Thought
**COMBINATIONAL ARITHMETIC**with 48 viewings related by tag "cfr". - Thought
**HWA CHI - BLOOMING UMBRELLA**with 47 viewings related by tag "cfr". - Thought
**FUNG SWI = PHENIX MARROW**with 46 viewings related by tag "cfr". - Thought
**TEN MI = LANTERN RIDDLES**with 46 viewings related by tag "cfr". - Thought
**TEK MEN - OPEN DOOR**with 34 viewings related by tag "ming". - Thought
**POH HOH - PEPPERMINT**with 29 viewings related by tag "cfr". - Thought
**I like Words - I respect words - I love words**with 27 viewings related by tag "ming". - Thought
**SUN ZYU = GENTLE RAIN**with 27 viewings related by tag "cfr". - Thought
**YOK KYN - JADE MIRROR**with 27 viewings related by tag "cfr". - Thought
**MAO SHA - MUD HUT**with 27 viewings related by tag "cfr". - Thought
**An Abso-Ming-Wen-Lutelly Absey-Booke**with 26 viewings related by tag "cfr". - Thought
**MAR SIANG - HORSEBACK**with 24 viewings related by tag "ming". - Thought
**TOONG DU - COPPER KETTLE**with 24 viewings related by tag "cfr". - Thought
**YIEH MEE - Wild Rice**with 22 viewings related by tag "cfr". - Thought
**Rough Cloth**with 22 viewings related by tag "cfr". - Thought
**Rime Store**with 21 viewings related by tag "cfr". - Thought
**Silver Cradle**with 20 viewings related by tag "cfr". - Thought
**ZHI GAH - GNAW THROUGH**with 19 viewings related by tag "cfr". - Thought
**BARBARA CUBED - I. DEFINITIONS**with 17 viewings related by tag "cfr". - Thought
**hex# 34 line 6**with 17 viewings related by tag "cfr". - Thought
**CFR debating team - maybe where some of us get the genes**with 17 viewings related by tag "cfr". - Thought
**SANG LO - HILL ROAD**with 14 viewings related by tag "cfr". - Thought
**JUN KOONG - SPRING PALACE**with 14 viewings related by tag "cfr". - Thought
**CHEK SAK - Water Chestnuts**with 13 viewings related by tag "ming". - Thought
**THAO LIM = PEACH GROVE**with 11 viewings related by tag "cfr". - Thought
**CFR Bibliography linked to Fastblogit**with 11 viewings related by tag "cfr". - Thought
**Finally it comes out independently**with 10 viewings related by tag "cfr". - Thought
**about: A Tower of Babel Never Tops the Sky**with 10 viewings related by tag "cfr". - Thought
**SAH KUK - MILLET VALLEY**with 9 viewings related by tag "cfr". - Thought
**Seth, Genesthai, and Lotus's Sculpture of Ahriman**with 8 viewings related by tag "cfr". - Thought
**Ming & Chinese Etymology**with 7 viewings related by tag "ming". - Thought
**Post Card classification Archive?**with 6 viewings related by tag "cfr".