Pith Number

pith:HFV4HPZC

pith:2017:HFV4HPZCEEA2IYFWE46T7ZUPYM

not attested not anchored not stored refs pending

Conditional Lower Bounds for Space/Time Tradeoffs

Ely Porat, Isaac Goldstein, Moshe Lewenstein, Tsvi Kopelowitz

arxiv:1706.05847 v2 · 2017-06-19 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HFV4HPZCEEA2IYFWE46T7ZUPYM}

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	2026-05-18T00:39:31.427491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

396bc3bf222101a460b6273d3fe68fc31474323cf8792de168368786395bf032

Aliases

arxiv: 1706.05847 · arxiv_version: 1706.05847v2 · doi: 10.48550/arxiv.1706.05847 · pith_short_12: HFV4HPZCEEA2 · pith_short_16: HFV4HPZCEEA2IYFW · pith_short_8: HFV4HPZC

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/HFV4HPZCEEA2IYFWE46T7ZUPYM \
  | 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: 396bc3bf222101a460b6273d3fe68fc31474323cf8792de168368786395bf032

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1c680c0d32d4415271c16ede336d8c66cd9a5337839e1a476aacf221a702b5f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-06-19T09:34:05Z",
    "title_canon_sha256": "98ae07076fa6c1b964b701313833be13f4bc62838d4fbdd5b53838517cc3e881"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05847",
    "kind": "arxiv",
    "version": 2
  }
}