Pith Number

pith:SX7MYXRH

pith:2018:SX7MYXRHCD5QDDI2AI7TAK6WYL

not attested not anchored not stored refs pending

Complexity in Mathematics Education

Brent Davis, Pratim Sengupta

arxiv:1805.07609 v1 · 2018-05-19 · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SX7MYXRHCD5QDDI2AI7TAK6WYL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:15:33.068525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95fecc5e2710fb018d1a023f302bd6c2c1c6173a4f48ad1c19dc398146fd3021

Aliases

arxiv: 1805.07609 · arxiv_version: 1805.07609v1 · doi: 10.48550/arxiv.1805.07609 · pith_short_12: SX7MYXRHCD5Q · pith_short_16: SX7MYXRHCD5QDDI2 · pith_short_8: SX7MYXRH

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/SX7MYXRHCD5QDDI2AI7TAK6WYL \
  | 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: 95fecc5e2710fb018d1a023f302bd6c2c1c6173a4f48ad1c19dc398146fd3021

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e567f6f5af1d1f62970b6bb264f05e07da44fab181644e255078a897f6072707",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2018-05-19T15:28:39Z",
    "title_canon_sha256": "a78ef64435204085409394902e35b2218910b1a9e86a46f819310d1ceff015e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.07609",
    "kind": "arxiv",
    "version": 1
  }
}