Pith Number

pith:77NCLM2S

pith:2017:77NCLM2SPEWXLVRQ4CX7HFIMAA

not attested not anchored not stored refs pending

Quantum algorithm for tree size estimation, with applications to backtracking and 2-player games

Andris Ambainis, Martins Kokainis

arxiv:1704.06774 v3 · 2017-04-22 · quant-ph · cs.CC · 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{77NCLM2SPEWXLVRQ4CX7HFIMAA}

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	2026-07-05T05:28:39.817522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffda25b352792d75d630e0aff3950c002ef862687e31593ca6a31b0e5ae70505

Aliases

arxiv: 1704.06774 · arxiv_version: 1704.06774v3 · doi: 10.48550/arxiv.1704.06774 · pith_short_12: 77NCLM2SPEWX · pith_short_16: 77NCLM2SPEWXLVRQ · pith_short_8: 77NCLM2S

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/77NCLM2SPEWXLVRQ4CX7HFIMAA \
  | 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: ffda25b352792d75d630e0aff3950c002ef862687e31593ca6a31b0e5ae70505

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba875aa8d3ad513b3486605c3d1a8ee0967df4d6879432cf7df257ca80b140d4",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-04-22T09:52:09Z",
    "title_canon_sha256": "01e590736efd0b2c9926ad3cabc0179487f27fbe264aba635923ccf4e13d2998"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.06774",
    "kind": "arxiv",
    "version": 3
  }
}