Pith Number

pith:F5T6FFHO

pith:2003:F5T6FFHOEOUFEY6Q2ALCYXA74R

not attested not anchored not stored refs pending

Selection principles in mathematics: A milestone of open problems

Boaz Tsaban

arxiv:math/0312182 v5 · 2003-12-09 · math.GN · math.CA · 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{F5T6FFHOEOUFEY6Q2ALCYXA74R}

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	2026-05-18T04:37:23.176495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f67e294ee23a85263d0d0162c5c1fe451ab223487a4c0478d6040780a996b17

Aliases

arxiv: math/0312182 · arxiv_version: math/0312182v5 · doi: 10.48550/arxiv.math/0312182 · pith_short_12: F5T6FFHOEOUF · pith_short_16: F5T6FFHOEOUFEY6Q · pith_short_8: F5T6FFHO

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/F5T6FFHOEOUFEY6Q2ALCYXA74R \
  | 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: 2f67e294ee23a85263d0d0162c5c1fe451ab223487a4c0478d6040780a996b17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91f6ac36eee9483374759ce20a5c691a7435fe522d441e8242238800927c351e",
    "cross_cats_sorted": [
      "math.CA",
      "math.CO",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2003-12-09T10:51:52Z",
    "title_canon_sha256": "c1bacbebd9e7d5fa9b06a4ac7787872248c58be758e6f2fd00b72945b0a1d191"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0312182",
    "kind": "arxiv",
    "version": 5
  }
}