Pith Number

pith:N3EH6QB7

pith:2015:N3EH6QB724BRUK7JBJ542EUWT5

not attested not anchored not stored refs pending

Projectively flat general $(\alpha,\beta)$-metrics with constant flag curvature

Changtao Yu, Hongmei Zhu

arxiv:1502.01395 v1 · 2015-02-05 · 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{N3EH6QB724BRUK7JBJ542EUWT5}

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	2026-05-18T02:27:56.626336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ec87f403fd7031a2be90a7bcd12969f691ce08621dcfb00e8fa8236035d123e

Aliases

arxiv: 1502.01395 · arxiv_version: 1502.01395v1 · doi: 10.48550/arxiv.1502.01395 · pith_short_12: N3EH6QB724BR · pith_short_16: N3EH6QB724BRUK7J · pith_short_8: N3EH6QB7

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/N3EH6QB724BRUK7JBJ542EUWT5 \
  | 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: 6ec87f403fd7031a2be90a7bcd12969f691ce08621dcfb00e8fa8236035d123e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0faa7f9215eb9816a6ae69f94c747c28ed6b226e3145fead403968c6baeac678",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-02-05T00:08:38Z",
    "title_canon_sha256": "d1789f990f0c1259c7261eb599c952645f8b5eb2782e103ca312b2fd7a9984a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01395",
    "kind": "arxiv",
    "version": 1
  }
}