Pith Number

pith:HFQPFKEM

pith:1996:HFQPFKEMJGWWYE4G6R3JMDZVDF

not attested not anchored not stored refs pending

Determinacy and \Delta^1_3-degrees

Philip Welch

arxiv:math/9608203 v1 · 1996-08-06 · 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{HFQPFKEMJGWWYE4G6R3JMDZVDF}

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	2026-05-18T01:05:47.134378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3960f2a88c49ad6c1386f476960f351943844734d87261012f087d3412fde827

Aliases

arxiv: math/9608203 · arxiv_version: math/9608203v1 · doi: 10.48550/arxiv.math/9608203 · pith_short_12: HFQPFKEMJGWW · pith_short_16: HFQPFKEMJGWWYE4G · pith_short_8: HFQPFKEM

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/HFQPFKEMJGWWYE4G6R3JMDZVDF \
  | 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: 3960f2a88c49ad6c1386f476960f351943844734d87261012f087d3412fde827

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3058565f928fcac85b79d51af38a22fcbb06c12a777bb1f10431d7ef1817a098",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.LO",
    "submitted_at": "1996-08-06T00:00:00Z",
    "title_canon_sha256": "30a21c17cde4430344329a6c7614582e99aa7fcf59be5d1152d11601bae912f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9608203",
    "kind": "arxiv",
    "version": 1
  }
}