Pith Number

pith:RFJTB4FT

pith:2012:RFJTB4FTYPTMIBSCLYCMDIJRR3

not attested not anchored not stored refs pending

Some Rigidity Conditions on Berwald Structures

Ricardo Gallego Torrom\'e

arxiv:1206.4403 v1 · 2012-06-20 · 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{RFJTB4FTYPTMIBSCLYCMDIJRR3}

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	2026-05-18T03:53:05.904487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

895330f0b3c3e6c406425e04c1a1318ed1369b159e07f9acbf12b979f9087bd3

Aliases

arxiv: 1206.4403 · arxiv_version: 1206.4403v1 · doi: 10.48550/arxiv.1206.4403 · pith_short_12: RFJTB4FTYPTM · pith_short_16: RFJTB4FTYPTMIBSC · pith_short_8: RFJTB4FT

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/RFJTB4FTYPTMIBSCLYCMDIJRR3 \
  | 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: 895330f0b3c3e6c406425e04c1a1318ed1369b159e07f9acbf12b979f9087bd3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9690c51de43560eaa8a21a7dbc8060f55af8482aa74254338c745111a73ad4b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-06-20T07:43:25Z",
    "title_canon_sha256": "0ced264f0877b44d3d3fa07314369e60d3ad6bac4d2a502c7cfdcd824bb58aba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.4403",
    "kind": "arxiv",
    "version": 1
  }
}