Pith Number

pith:FF7HT3W6

pith:2012:FF7HT3W6MMZ4M2AWB2GJZA7JOW

not attested not anchored not stored refs pending

The Instructor's Guide to Real Induction

Pete L. Clark

arxiv:1208.0973 v1 · 2012-08-05 · math.HO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FF7HT3W6MMZ4M2AWB2GJZA7JOW}

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	2026-05-18T03:49:20.963386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

297e79eede6333c668160e8c9c83e97589b1afa714a0910411a08e2c9901b42c

Aliases

arxiv: 1208.0973 · arxiv_version: 1208.0973v1 · doi: 10.48550/arxiv.1208.0973 · pith_short_12: FF7HT3W6MMZ4 · pith_short_16: FF7HT3W6MMZ4M2AW · pith_short_8: FF7HT3W6

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/FF7HT3W6MMZ4M2AWB2GJZA7JOW \
  | 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: 297e79eede6333c668160e8c9c83e97589b1afa714a0910411a08e2c9901b42c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09cccbbcf06987ed8956f0baa8c5e8394d5a7145aa90996d6bd7975a27cce80d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2012-08-05T01:31:34Z",
    "title_canon_sha256": "6d7554c806b1cf52bc0ffa122c914c3e2f25ff65f234181b50a5e069c4c9080e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0973",
    "kind": "arxiv",
    "version": 1
  }
}