Pith Number

pith:XB7HICBU

pith:2026:XB7HICBUE2ADH4ROCM7JC6DUN6

not attested not anchored not stored refs pending

ETH-Tight Complexity of Optimal Morse Matching on Bounded-Treewidth Complexes

Erlend Raa V{\aa}gset, Geevarghese Philip

arxiv:2603.05406 v2 · 2026-03-05 · cs.CG · cs.CC · cs.DM · cs.DS · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XB7HICBUE2ADH4ROCM7JC6DUN6}

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	2026-06-03T01:05:49.570288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b87e740834268033f22e133e9178746f9e20b22a624b24efb8daf92ed632d725

Aliases

arxiv: 2603.05406 · arxiv_version: 2603.05406v2 · doi: 10.48550/arxiv.2603.05406 · pith_short_12: XB7HICBUE2AD · pith_short_16: XB7HICBUE2ADH4RO · pith_short_8: XB7HICBU

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/XB7HICBUE2ADH4ROCM7JC6DUN6 \
  | 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: b87e740834268033f22e133e9178746f9e20b22a624b24efb8daf92ed632d725

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4032abfc01c7e7ae478f32b070bad5a11ef305043a8b2921c0019d631b7533ce",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM",
      "cs.DS",
      "math.GN"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2026-03-05T17:32:04Z",
    "title_canon_sha256": "74ae94894c703e85ac8ab4ae4f1739a35a7f692acaa8a4ba8b8bfad75b4892af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.05406",
    "kind": "arxiv",
    "version": 2
  }
}