Pith Number

pith:UBFKAXPZ

pith:2011:UBFKAXPZ4EA7TFU2U4BFJRJDVA

not attested not anchored not stored refs pending

The full Fisher matrix for galaxy surveys

L. Raul Abramo

arxiv:1108.5449 v2 · 2011-08-27 · astro-ph.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{UBFKAXPZ4EA7TFU2U4BFJRJDVA}

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	2026-05-18T03:55:00.394046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a04aa05df9e101f9969aa70254c523a828197c40571459ef290cf0e6cc5b2200

Aliases

arxiv: 1108.5449 · arxiv_version: 1108.5449v2 · doi: 10.48550/arxiv.1108.5449 · pith_short_12: UBFKAXPZ4EA7 · pith_short_16: UBFKAXPZ4EA7TFU2 · pith_short_8: UBFKAXPZ

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/UBFKAXPZ4EA7TFU2U4BFJRJDVA \
  | 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: a04aa05df9e101f9969aa70254c523a828197c40571459ef290cf0e6cc5b2200

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db684f264dec8cf009559aed60e0665e19d663836a8d38e7926ad1bfb776bd42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-27T13:02:16Z",
    "title_canon_sha256": "f6227ebb48eaf4250ab185357bc876cc9d65af81b6835fec2e278529b7b6f6b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5449",
    "kind": "arxiv",
    "version": 2
  }
}