Pith Number

pith:5QI5UZ2P

pith:2019:5QI5UZ2PAM2L7JBKZT3YKEHY4M

not attested not anchored not stored refs pending

Beginning Mathematical Writing Assignments

Alexander Halperin, Colton Magnant, Zhuojun Magnant

arxiv:1905.07616 v1 · 2019-05-18 · 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{5QI5UZ2PAM2L7JBKZT3YKEHY4M}

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	2026-05-17T23:45:49.083396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec11da674f0334bfa42accf78510f8e33cbffbb3cc0d9b19b374ab1a268c8f6c

Aliases

arxiv: 1905.07616 · arxiv_version: 1905.07616v1 · doi: 10.48550/arxiv.1905.07616 · pith_short_12: 5QI5UZ2PAM2L · pith_short_16: 5QI5UZ2PAM2L7JBK · pith_short_8: 5QI5UZ2P

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/5QI5UZ2PAM2L7JBKZT3YKEHY4M \
  | 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: ec11da674f0334bfa42accf78510f8e33cbffbb3cc0d9b19b374ab1a268c8f6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "252cf5e539b9543972449870ce53654802cf44c5f13f06261a0662edb9a13c51",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2019-05-18T17:17:06Z",
    "title_canon_sha256": "a8523f882edc5999d557fb531314a0a8623f06083747df1f5f7c38d42b526ff7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.07616",
    "kind": "arxiv",
    "version": 1
  }
}