Pith Number

pith:C4NJMB65

pith:2011:C4NJMB65IE7D24IGLWHWQMD66F

not attested not anchored not stored refs pending

A note on efficient computation of hybridization number via softwired clusters

Steven Kelk

arxiv:1108.4642 v1 · 2011-08-23 · q-bio.PE · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C4NJMB65IE7D24IGLWHWQMD66F}

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	2026-05-18T04:14:54.035483Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

171a9607dd413e3d71065d8f68307ef153f4890e86523e112b7af7358e9a7cb4

Aliases

arxiv: 1108.4642 · arxiv_version: 1108.4642v1 · doi: 10.48550/arxiv.1108.4642 · pith_short_12: C4NJMB65IE7D · pith_short_16: C4NJMB65IE7D24IG · pith_short_8: C4NJMB65

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/C4NJMB65IE7D24IGLWHWQMD66F \
  | 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: 171a9607dd413e3d71065d8f68307ef153f4890e86523e112b7af7358e9a7cb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b3caf0620512c3e326b64f19ef87e249f53984f0f241e467c4e1c5a97b51f11",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2011-08-23T15:54:02Z",
    "title_canon_sha256": "903574c1ffaaaf7819e851ae6e2f20481cbd193494383cba3ce9685849937fb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4642",
    "kind": "arxiv",
    "version": 1
  }
}