Pith Number

pith:H5HV6KMF

pith:2025:H5HV6KMFVVALSFWTNFLIRV3LF4

not attested not anchored not stored refs pending

On the maximal matchings of trees

Kai Deng, Lingjuan Shi, Wei Li

arxiv:2506.08557 v1 · 2025-06-10 · 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{H5HV6KMFVVALSFWTNFLIRV3LF4}

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	2026-07-05T11:19:09.668055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f4f5f2985ad40b916d3695688d76b2f29e58ef540797ea80cc646fc50684fc2

Aliases

arxiv: 2506.08557 · arxiv_version: 2506.08557v1 · doi: 10.48550/arxiv.2506.08557 · pith_short_12: H5HV6KMFVVAL · pith_short_16: H5HV6KMFVVALSFWT · pith_short_8: H5HV6KMF

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/H5HV6KMFVVALSFWTNFLIRV3LF4 \
  | 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: 3f4f5f2985ad40b916d3695688d76b2f29e58ef540797ea80cc646fc50684fc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccee416105c3dc240bfc6348cd4c92387cb9456b3d8ec26abc8b08e1003aa13d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-06-10T08:25:49Z",
    "title_canon_sha256": "6ebcd199d71bd95a9ebd92391a3c696c25a9140ac8335b10d95f2ce9e025c662"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.08557",
    "kind": "arxiv",
    "version": 1
  }
}