Pith Number

pith:A2QRI7TH

pith:2010:A2QRI7THFT66MK2GCXNX4V44PI

not attested not anchored not stored refs pending

What use are Exponential Weights for flexi-Weighted Least Squares Phylogenetic Trees?

Ishita Khan, Peter J. Waddell, Xi Tan

arxiv:1012.5882 v1 · 2010-12-29 · q-bio.PE · q-bio.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{A2QRI7THFT66MK2GCXNX4V44PI}

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	2026-05-18T04:32:21.237026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06a1147e672cfde62b4615db7e579c7a2ed3c4522d70848105e2cfd3e996d245

Aliases

arxiv: 1012.5882 · arxiv_version: 1012.5882v1 · doi: 10.48550/arxiv.1012.5882 · pith_short_12: A2QRI7THFT66 · pith_short_16: A2QRI7THFT66MK2G · pith_short_8: A2QRI7TH

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/A2QRI7THFT66MK2GCXNX4V44PI \
  | 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: 06a1147e672cfde62b4615db7e579c7a2ed3c4522d70848105e2cfd3e996d245

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebb96f0c42d6448dbdbb7d634f9ae60333ad975981a1ae4d697d56db04672a04",
    "cross_cats_sorted": [
      "q-bio.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2010-12-29T07:43:13Z",
    "title_canon_sha256": "ffd879a3f103d8881c668482b8c8bd66ef65d8e0cd9041fb3517e775f9c5b3fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.5882",
    "kind": "arxiv",
    "version": 1
  }
}