Pith Number

pith:4IDTSWF6

pith:2012:4IDTSWF6UAG5YY46GFTXCY2NYH

not attested not anchored not stored refs pending

Dimension Reduction in Principal Component Analysis for Trees

Alim Ladha, Burcu Ayd{\i}n, Carlos A. Alfaro, Carlos E. Valencia, Elizabeth Bullitt

arxiv:1202.2371 v1 · 2012-02-10 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4IDTSWF6UAG5YY46GFTXCY2NYH}

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	2026-05-18T04:02:26.653302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2073958bea00ddc639e316771634dc1e1ad706a456c7d4e73c9d568fad01ed0

Aliases

arxiv: 1202.2371 · arxiv_version: 1202.2371v1 · doi: 10.48550/arxiv.1202.2371 · pith_short_12: 4IDTSWF6UAG5 · pith_short_16: 4IDTSWF6UAG5YY46 · pith_short_8: 4IDTSWF6

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/4IDTSWF6UAG5YY46GFTXCY2NYH \
  | 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: e2073958bea00ddc639e316771634dc1e1ad706a456c7d4e73c9d568fad01ed0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "445bc99183e89f61166fd9bf26fd77e49230e49ab8571e304a35b9d6bd79acc1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2012-02-10T21:21:01Z",
    "title_canon_sha256": "efb019680ff4b4ba6964bb201870ad304ee91d009fed6159cd1edffc6d747926"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2371",
    "kind": "arxiv",
    "version": 1
  }
}