Pith Number

pith:S2NMYMCJ

pith:2001:S2NMYMCJ5DUKJGT6VAS7VVIIEU

not attested not anchored not stored refs pending

A diagonalization property between Hurewicz and Menger

Boaz Tsaban

arxiv:math/0106085 v4 · 2001-06-11 · 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{S2NMYMCJ5DUKJGT6VAS7VVIIEU}

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	2026-05-18T04:42:43.415067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

969acc3049e8e8a49a7ea825fad5082531c395d13d41be619c0e06808727b437

Aliases

arxiv: math/0106085 · arxiv_version: math/0106085v4 · doi: 10.48550/arxiv.math/0106085 · pith_short_12: S2NMYMCJ5DUK · pith_short_16: S2NMYMCJ5DUKJGT6 · pith_short_8: S2NMYMCJ

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/S2NMYMCJ5DUKJGT6VAS7VVIIEU \
  | 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: 969acc3049e8e8a49a7ea825fad5082531c395d13d41be619c0e06808727b437

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff158a785e70da404bcaa023bc5676338b8821449159eb801329b463c1993516",
    "cross_cats_sorted": [
      "math.CO",
      "math.LO"
    ],
    "license": "",
    "primary_cat": "math.GN",
    "submitted_at": "2001-06-11T16:46:59Z",
    "title_canon_sha256": "74ca714c8399186f262586709ba8716fdd9b0fa7475a803ec268b577959a5fe6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0106085",
    "kind": "arxiv",
    "version": 4
  }
}