Pith Number

pith:RP3Y4VF5

pith:2021:RP3Y4VF575NYUL6LVKTKRPUNLR

not attested not anchored not stored refs pending

The Element Extraction Problem and the Cost of Determinism and Limited Adaptivity in Linear Queries

Amit Chakrabarti, Manuel Stoeckl

arxiv:2107.05810 v1 · 2021-07-13 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RP3Y4VF575NYUL6LVKTKRPUNLR}

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	2026-07-05T02:57:28.530582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bf78e54bdff5b8a2fcbaaa6a8be8d5c6632510eb4cbd47d75d0acde2293a782

Aliases

arxiv: 2107.05810 · arxiv_version: 2107.05810v1 · doi: 10.48550/arxiv.2107.05810 · pith_short_12: RP3Y4VF575NY · pith_short_16: RP3Y4VF575NYUL6L · pith_short_8: RP3Y4VF5

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/RP3Y4VF575NYUL6LVKTKRPUNLR \
  | 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: 8bf78e54bdff5b8a2fcbaaa6a8be8d5c6632510eb4cbd47d75d0acde2293a782

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9783355e595f1a69cb1e8ded4493a8c66e61c70c8b269e832a3658cfe8f61155",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2021-07-13T02:07:49Z",
    "title_canon_sha256": "85be5edfd2bad4beed480bf826afcdea2bbd03b7f94689fe457f85a4458c9db0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.05810",
    "kind": "arxiv",
    "version": 1
  }
}