Pith Number

pith:QBK6KPYW

pith:2017:QBK6KPYWJQPK4N3NP4NJQBLA63

not attested not anchored not stored refs pending

Rigidity of closed metric measure spaces with nonnegative curvature

Jia-Yong Wu

arxiv:1706.07894 v1 · 2017-06-24 · 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{QBK6KPYWJQPK4N3NP4NJQBLA63}

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	2026-05-18T00:41:47.243371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8055e53f164c1eae376d7f1a980560f6fd46e8655df9369205a63abab20d0159

Aliases

arxiv: 1706.07894 · arxiv_version: 1706.07894v1 · doi: 10.48550/arxiv.1706.07894 · pith_short_12: QBK6KPYWJQPK · pith_short_16: QBK6KPYWJQPK4N3N · pith_short_8: QBK6KPYW

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/QBK6KPYWJQPK4N3NP4NJQBLA63 \
  | 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: 8055e53f164c1eae376d7f1a980560f6fd46e8655df9369205a63abab20d0159

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8372dae04df4368d68279ee4d911d123ee9bb32144628ffaa141d84634698ead",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-06-24T02:00:50Z",
    "title_canon_sha256": "26fe216b0d608ae3ab579b58fdb18cb920c175ead6c3efa8a2295d0c27383d8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.07894",
    "kind": "arxiv",
    "version": 1
  }
}