Pith Number

pith:XHAB7BZ5

pith:2018:XHAB7BZ5XBA4IFF2XMPVCF5FJ2

not attested not anchored not stored refs pending

*-polynomial identities of 4x4 upper triangular matrices with the reflection involution

Ronald Ismael Quispe Urure

arxiv:1810.12362 v1 · 2018-10-29 · math.RA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XHAB7BZ5XBA4IFF2XMPVCF5FJ2}

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	2026-05-18T00:02:02.918764Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9c01f873db841c414babb1f5117a54e84f6675fbbe72befe07555ae52937127

Aliases

arxiv: 1810.12362 · arxiv_version: 1810.12362v1 · doi: 10.48550/arxiv.1810.12362 · pith_short_12: XHAB7BZ5XBA4 · pith_short_16: XHAB7BZ5XBA4IFF2 · pith_short_8: XHAB7BZ5

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/XHAB7BZ5XBA4IFF2XMPVCF5FJ2 \
  | 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: b9c01f873db841c414babb1f5117a54e84f6675fbbe72befe07555ae52937127

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b042e77b714e544dcd987a237de22a7dce20b8a8d0ff5437a80b1e722bd3fa00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2018-10-29T19:10:51Z",
    "title_canon_sha256": "36d9091277ac73263870b259bad6136751af9614b4d361e90f1837f294840530"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.12362",
    "kind": "arxiv",
    "version": 1
  }
}