Pith Number

pith:MUQVPOJP

pith:1999:MUQVPOJPWN6WN4VKVGRSH3UCPA

not attested not anchored not stored refs pending

Classification of irreducible holonomies of torsion-free affine connections

Lorenz Schwachh\"ofer, Sergei Merkulov

arxiv:math/9907206 v1 · 1999-07-01 · 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{MUQVPOJPWN6WN4VKVGRSH3UCPA}

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	2026-05-18T01:05:32.760826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

652157b92fb37d66f2aaa9a323ee827837ec0cf4c67b521e3675711ec50d813c

Aliases

arxiv: math/9907206 · arxiv_version: math/9907206v1 · doi: 10.48550/arxiv.math/9907206 · pith_short_12: MUQVPOJPWN6W · pith_short_16: MUQVPOJPWN6WN4VK · pith_short_8: MUQVPOJP

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/MUQVPOJPWN6WN4VKVGRSH3UCPA \
  | 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: 652157b92fb37d66f2aaa9a323ee827837ec0cf4c67b521e3675711ec50d813c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68f393582444a0a7c18c44bd117cd705d22727b2be16cafb4eb3ca5239c2d2f2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "1999-07-01T00:00:00Z",
    "title_canon_sha256": "17478c76a718f9e8ddafa1fe75d6ad0896bb2688e8d24c735e62133c63ca705d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9907206",
    "kind": "arxiv",
    "version": 1
  }
}