Pith Number

pith:6DB7OIVK

pith:2010:6DB7OIVK53ZJHWEV6UWKJCULN5

not attested not anchored not stored refs pending

Rank-width and Well-quasi-ordering of Skew-Symmetric or Symmetric Matrices

Sang-il Oum

arxiv:1007.3807 v1 · 2010-07-22 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6DB7OIVK53ZJHWEV6UWKJCULN5}

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	2026-05-18T02:55:39.608438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0c3f722aaeef293d895f52ca48a8b6f564e0838b824f3efc17143068b1b16e4

Aliases

arxiv: 1007.3807 · arxiv_version: 1007.3807v1 · doi: 10.48550/arxiv.1007.3807 · pith_short_12: 6DB7OIVK53ZJ · pith_short_16: 6DB7OIVK53ZJHWEV · pith_short_8: 6DB7OIVK

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/6DB7OIVK53ZJHWEV6UWKJCULN5 \
  | 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: f0c3f722aaeef293d895f52ca48a8b6f564e0838b824f3efc17143068b1b16e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3a15e3939c38266e0585bcf7145cdc8d47a2dbc995ead559561950061139f81",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-07-22T06:42:50Z",
    "title_canon_sha256": "c47eb03953e231c1f6194f6b4e4ff20928abc2eb5bc2c39ae93cf1639e7e388f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.3807",
    "kind": "arxiv",
    "version": 1
  }
}