Pith Number

pith:SH4MBGTY

pith:2011:SH4MBGTYSFXEGBZRMN3JEDPXV2

not attested not anchored not stored refs pending

Selective Memoization

Guy E. Blelloch, Robert Harper, Umut A. Acar

arxiv:1106.0447 v1 · 2011-06-02 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SH4MBGTYSFXEGBZRMN3JEDPXV2}

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	2026-05-18T04:20:50.365184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91f8c09a78916e4307316376920df7ae80475a75b7305ed4f06582e5258bd382

Aliases

arxiv: 1106.0447 · arxiv_version: 1106.0447v1 · doi: 10.48550/arxiv.1106.0447 · pith_short_12: SH4MBGTYSFXE · pith_short_16: SH4MBGTYSFXEGBZR · pith_short_8: SH4MBGTY

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/SH4MBGTYSFXEGBZRMN3JEDPXV2 \
  | 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: 91f8c09a78916e4307316376920df7ae80475a75b7305ed4f06582e5258bd382

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa3ebec12ffec7f921b52815bec398c6e4b6ec56d7fcf05e9a43ed29cb3b179f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2011-06-02T15:03:15Z",
    "title_canon_sha256": "d362a42eeb6b79989cd041b498272cbb2d00d94af6b40916d70091fa7ad26a59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.0447",
    "kind": "arxiv",
    "version": 1
  }
}