Pith Number

pith:PTHXK3N4

pith:2024:PTHXK3N4IYHFTG4C6BXWUNTBFO

not attested not anchored not stored refs pending

Finding hypergraph immersion is fixed-parameter tractable

Xiangyi Meng, Yu Tian

arxiv:2411.16017 v1 · 2024-11-24 · cs.DM · 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{PTHXK3N4IYHFTG4C6BXWUNTBFO}

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	2026-07-05T09:40:02.621121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ccf756dbc460e599b82f06f6a36612b8c563dc3445f29e82851c9ce02029471

Aliases

arxiv: 2411.16017 · arxiv_version: 2411.16017v1 · doi: 10.48550/arxiv.2411.16017 · pith_short_12: PTHXK3N4IYHF · pith_short_16: PTHXK3N4IYHFTG4C · pith_short_8: PTHXK3N4

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/PTHXK3N4IYHFTG4C6BXWUNTBFO \
  | 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: 7ccf756dbc460e599b82f06f6a36612b8c563dc3445f29e82851c9ce02029471

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "523d0c9bcf3f5e7a80474b955c215def75e7fe50a685c5e252695d574009feb6",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2024-11-24T23:58:16Z",
    "title_canon_sha256": "39b41d9edc4888c126f93a443b3db0a1d3c9219dc951bc05357f91af6512839d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2411.16017",
    "kind": "arxiv",
    "version": 1
  }
}