Pith Number

pith:U7TWPNGB

pith:2013:U7TWPNGBPJ762SDS7ENEVDYH5F

not attested not anchored not stored refs pending

On the classification of projectively flat Finsler metrics with constant flag curvature

Benling Li

arxiv:1308.2986 v1 · 2013-08-13 · 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{U7TWPNGBPJ762SDS7ENEVDYH5F}

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	2026-05-18T03:15:57.011165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7e767b4c17a7fed4872f91a4a8f07e96ee2d75f061eb3a27c7adc06964e77b2

Aliases

arxiv: 1308.2986 · arxiv_version: 1308.2986v1 · doi: 10.48550/arxiv.1308.2986 · pith_short_12: U7TWPNGBPJ76 · pith_short_16: U7TWPNGBPJ762SDS · pith_short_8: U7TWPNGB

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/U7TWPNGBPJ762SDS7ENEVDYH5F \
  | 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: a7e767b4c17a7fed4872f91a4a8f07e96ee2d75f061eb3a27c7adc06964e77b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5adac3ce972075c23bfa7a9f3a9af82806b0afe750c165ada84c0040b64b09b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-08-13T22:06:17Z",
    "title_canon_sha256": "4cec086de4e4e9266312bb863607be1b40dd79e4c7675cab4010c08a4bad3072"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2986",
    "kind": "arxiv",
    "version": 1
  }
}