Pith Number

pith:QFVLHW3I

pith:2018:QFVLHW3IBOVEI7SDLGGHPSNXAC

not attested not anchored not stored refs pending

On operations preserving semi-transitive orientability of graphs

Ilkyoo Choi, Jinha Kim, Minki Kim

arxiv:1810.11620 v1 · 2018-10-27 · 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{QFVLHW3IBOVEI7SDLGGHPSNXAC}

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	2026-05-17T23:41:36.847708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

816ab3db680baa447e43598c77c9b700a2f4d808df65427bed6dd8c1bba93fa6

Aliases

arxiv: 1810.11620 · arxiv_version: 1810.11620v1 · doi: 10.48550/arxiv.1810.11620 · pith_short_12: QFVLHW3IBOVE · pith_short_16: QFVLHW3IBOVEI7SD · pith_short_8: QFVLHW3I

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/QFVLHW3IBOVEI7SDLGGHPSNXAC \
  | 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: 816ab3db680baa447e43598c77c9b700a2f4d808df65427bed6dd8c1bba93fa6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88cb1586e7b6b899a0342409b303293549c8e2619d4224f9ddab9540ff667ec4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-10-27T08:49:23Z",
    "title_canon_sha256": "97531e14350ee7fd0034796cd0c9922b09fe53eb1c584395b59c3cd2f6244af2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.11620",
    "kind": "arxiv",
    "version": 1
  }
}