Pith Number

pith:ZVTCQ4KV

pith:2015:ZVTCQ4KV7C2NTJCBGVN3IQSPIO

not attested not anchored not stored refs pending

A note on non-negatively curved Berwald spaces

Martin Kell

arxiv:1502.03764 v2 · 2015-02-12 · 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{ZVTCQ4KV7C2NTJCBGVN3IQSPIO}

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	2026-05-18T02:26:29.712398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd66287155f8b4d9a441355bb4424f438c3db97bf10dee6a64ba08b8affc4ea7

Aliases

arxiv: 1502.03764 · arxiv_version: 1502.03764v2 · doi: 10.48550/arxiv.1502.03764 · pith_short_12: ZVTCQ4KV7C2N · pith_short_16: ZVTCQ4KV7C2NTJCB · pith_short_8: ZVTCQ4KV

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/ZVTCQ4KV7C2NTJCBGVN3IQSPIO \
  | 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: cd66287155f8b4d9a441355bb4424f438c3db97bf10dee6a64ba08b8affc4ea7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03cedad645e3c499d200b9c7a69a5a812bd476ac62d122e1fcb44c88ec1b6712",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-02-12T18:24:51Z",
    "title_canon_sha256": "bd83b010e7ee1a5ce7eba95b1ceaa5d247670671198a7b3f85cb2723cda61b8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.03764",
    "kind": "arxiv",
    "version": 2
  }
}