Pith Number

pith:6DFWUF2A

pith:2009:6DFWUF2AMOOBNPFBZFTJQ5VHUR

not attested not anchored not stored refs pending

Almost indiscernible sequences and convergence of canonical bases

Alexander Berenstein, C. Ward Henson (UIUC), Ita\"i Ben Yaacov (ICJ)

arxiv:0907.4508 v2 · 2009-07-26 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6DFWUF2AMOOBNPFBZFTJQ5VHUR}

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	2026-05-18T03:16:40.725405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0cb6a1740639c16bca1c9669876a7a47a9366131678c39ad60e9aa9f22f1e59

Aliases

arxiv: 0907.4508 · arxiv_version: 0907.4508v2 · doi: 10.48550/arxiv.0907.4508 · pith_short_12: 6DFWUF2AMOOB · pith_short_16: 6DFWUF2AMOOBNPFB · pith_short_8: 6DFWUF2A

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/6DFWUF2AMOOBNPFBZFTJQ5VHUR \
  | 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: f0cb6a1740639c16bca1c9669876a7a47a9366131678c39ad60e9aa9f22f1e59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbc6a9d12c542c29874b4652b813e0b5a5b99a03f91e294c5ea53e1f6692bce0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2009-07-26T19:07:07Z",
    "title_canon_sha256": "0570879deacc1a12a21dec05742222bdde77168044b3ff96605237ec114a4af1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4508",
    "kind": "arxiv",
    "version": 2
  }
}