Pith Number

pith:TUCUORQK

pith:2005:TUCUORQK3N37GSBNGI3NO44WPO

not attested not anchored not stored refs pending

Scales, fields, and a problem of Hurewicz

Boaz Tsaban, Lubomyr Zdomsky

arxiv:math/0507043 v6 · 2005-07-03 · math.GN · math.CO · 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{TUCUORQK3N37GSBNGI3NO44WPO}

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	2026-05-18T04:37:23.147979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d0547460adb77f3482d3236d773967b9bc0b6d80c040d76dfddd96b28ff3ece

Aliases

arxiv: math/0507043 · arxiv_version: math/0507043v6 · doi: 10.48550/arxiv.math/0507043 · pith_short_12: TUCUORQK3N37 · pith_short_16: TUCUORQK3N37GSBN · pith_short_8: TUCUORQK

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/TUCUORQK3N37GSBNGI3NO44WPO \
  | 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: 9d0547460adb77f3482d3236d773967b9bc0b6d80c040d76dfddd96b28ff3ece

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ab0915463083db358f8cbd228bce7e734415acfb7d5fef3f0a4565f7e2ad5b9",
    "cross_cats_sorted": [
      "math.CO",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2005-07-03T17:10:19Z",
    "title_canon_sha256": "b7bea0a9d22a073008cebda718ad492a9bf3ed5ac0e198fb597566a30f7dfa0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0507043",
    "kind": "arxiv",
    "version": 6
  }
}