Pith Number

pith:NQSA6JKT

pith:2009:NQSA6JKT2LBH22UE6GJEY4LTO7

not attested not anchored not stored refs pending

Fixed-point tile sets and their applications

Alexander Shen (LIF), Andrei Romashchenko (LIF), Bruno Durand (LIF)

arxiv:0910.2415 v7 · 2009-10-13 · cs.CC · math.DS · 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{NQSA6JKT2LBH22UE6GJEY4LTO7}

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	2026-05-18T02:32:12.431427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c240f2553d2c27d6a84f1924c717377da9bd29aeb70fcf6064e1bd49bcf44a3

Aliases

arxiv: 0910.2415 · arxiv_version: 0910.2415v7 · doi: 10.48550/arxiv.0910.2415 · pith_short_12: NQSA6JKT2LBH · pith_short_16: NQSA6JKT2LBH22UE · pith_short_8: NQSA6JKT

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/NQSA6JKT2LBH22UE6GJEY4LTO7 \
  | 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: 6c240f2553d2c27d6a84f1924c717377da9bd29aeb70fcf6064e1bd49bcf44a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf719276f836e25109ce0a3d7f4a30bc7c04a0802dac42f336485bbd6e164daa",
    "cross_cats_sorted": [
      "math.DS",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2009-10-13T18:55:52Z",
    "title_canon_sha256": "0aa29573ffd85234389db5da43ea573353500d3f75e8de87d28b68cc89f17efa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2415",
    "kind": "arxiv",
    "version": 7
  }
}