Pith Number

pith:GOYXAJZX

pith:2017:GOYXAJZXRBQHWHBAZVBQOCUI3E

not attested not anchored not stored refs pending

Closed almost-K\"ahler 4-manifolds of constant non-negative Hermitian holomorphic sectional curvature are K\"ahler

Markus Upmeier, Mehdi Lejmi

arxiv:1709.05210 v1 · 2017-09-15 · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GOYXAJZXRBQHWHBAZVBQOCUI3E}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:35:06.401861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33b170273788607b1c20cd43070a88d91689ca2e30f6cac928c939048c788a1f

Aliases

arxiv: 1709.05210 · arxiv_version: 1709.05210v1 · doi: 10.48550/arxiv.1709.05210 · pith_short_12: GOYXAJZXRBQH · pith_short_16: GOYXAJZXRBQHWHBA · pith_short_8: GOYXAJZX

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/GOYXAJZXRBQHWHBAZVBQOCUI3E \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 33b170273788607b1c20cd43070a88d91689ca2e30f6cac928c939048c788a1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b947a5b1224f5ef0a6daffa36ffb98b4c1f77a6a01886fe2324b1096fcc0f4b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-09-15T13:51:54Z",
    "title_canon_sha256": "110bf52339c03f61f3206c7dec39482bc780b8681f90254e3ed0d2e19248993d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.05210",
    "kind": "arxiv",
    "version": 1
  }
}