Pith Number

pith:QXVPZANE

pith:2009:QXVPZANETP3TAERZLAFEH4BSJQ

not attested not anchored not stored refs pending

Coarse spaces over the ages

Bed\v{r}ich Soused\'ik, Jan Mandel

arxiv:0911.5725 v2 · 2009-11-30 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QXVPZANETP3TAERZLAFEH4BSJQ}

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	2026-05-18T02:47:31.876548Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85eafc81a49bf7301239580a43f0324c1f99edfae5f4b26cec9622d938cf5ea6

Aliases

arxiv: 0911.5725 · arxiv_version: 0911.5725v2 · doi: 10.48550/arxiv.0911.5725 · pith_short_12: QXVPZANETP3T · pith_short_16: QXVPZANETP3TAERZ · pith_short_8: QXVPZANE

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/QXVPZANETP3TAERZLAFEH4BSJQ \
  | 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: 85eafc81a49bf7301239580a43f0324c1f99edfae5f4b26cec9622d938cf5ea6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3397bb8a699f865696a505972dffcf562b82057791006dc178c1d44bc55fc15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-11-30T20:17:26Z",
    "title_canon_sha256": "ccf5b2264bea1e8e259a14536ccc7d063b7499aa617f072eec0abcd1bf81e70e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.5725",
    "kind": "arxiv",
    "version": 2
  }
}